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12 2x 1 x 1 x

12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x
12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x
12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x12 2x 1 x 1 x