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1º:2(6,10)(3,8)1(14,16)4-(11,9)-(13,15)-(5,7)-12
2º:2(6,10)(3,8)1,14(4,16)-(11,9)=13,15(5,7)-12
3º:2(10,8)(6,3,14)1,4,11(9,12)5,13(16,15)7
4º:(*2,10,8)(3,14)-(6,1)12,4(11,5)-13,15,9,7-16
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