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B x2 2x
B x2 2x pictures 5
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B x2
B x2 2x
x2 1 a b 2x 3y
b x2 2x 8 0
b x2 2x 3 0
b x2 2x x 4
b 2x 2y x2 y2
x2 2x b
ax3 x2 2x b
b x2 2x 1
b x2 2x 1 0
b x2 2x 15 0