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2x 2y x 1

2x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 1
2x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 1
2x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 12x 2y x 1