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