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X2 2x 1 x 7

X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7
X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7
X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7
X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7
X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7X2 2x 1 x 7