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3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7
3 1 x x2 7