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file:=HapFile("data247.txt");
Read(file);
F:=ThickeningFiltration(T,20);;
Y:=FiltrationTerm(F,12);;
Print(Size(Y),"\n");
Y:=ZigZagContractedComplex(Y,2);;
Y:=ContractedComplex(RegularCWComplex(Y));;
Print(Cohomology(Y,0),"\n");
Print(Cohomology(Y,1),"\n");
Print(Cohomology(Y,2),"\n");
G:=FundamentalGroup(Y);;
Print(IsAbelian(G),"\n");
G:=NilpotentQuotient(G,1);;
E_G:=Resolution(G,3);;
Print(CupProduct(E_G,1,1,[1,0],[0,1]),"\n");
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