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U 2 x u 1

U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1
U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1
U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1U 2 x u 1