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Yu003d2 x 3 3(2m+1)x 2+6m(m+1)x+1
Yu003d2 x 3 3(2m+1)x 2+6m(m+1)x+1 pictures 5
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Yu003d2 x 3 3(2m+1)x 2+6m(m+1)x+1
Yu003d2 x 3 3(2m+1)x 2+6m(m+1)x+1
