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5x 1 2
5x 1 2 pictures 5
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5x 1 2
5x 1 2 0
5x 1 2 derivative
5x 1 2 x 1 2 0
5x 1 2 x
5x 1 2 8
5x 1 2 x 7
5x 1 2 x 9 2
5x 1 2 3
5x 1 2 7
5x 1 2
