gap> H:=SmallGroup(64,134);;
gap> N:=NormalSubgroups(H)[15];;
gap> A:=Centre(GOuterGroup(H,N));;
gap> G:=ActingGroup(A);;
gap> R:=ResolutionFiniteGroup(G,3);;
gap> C:=HomToGModule(R,A);;
gap> Cohomology(C,2);
[ 2 ]
