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taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught taught