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1º:12-(1,8,9)10,5(11,13)(2,3,16)(14,17)18(4,6)(15,7)
2º:12,8(1,9)-10(5,13)11(2,3,16)(14,17)18,4,6,15,7
3º:12-(1,8)(9,10)(5,13,7)(14,11,16)(2,3,17)18-(4,6,15)
4º:(12,*10)(1,13,7)14(9,5,11,16)(18,3)(8,15)(6,17)2-4
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