GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
# ACEExample "perf602p5" : enumeration of cosets of H in G, # where G = PerfectGroup(60*2^5, 2), |G : H| = 480, using # default strategy. # local G, fgens; G := PerfectGroup(2^5*60, 2); fgens := FreeGeneratorsOfFpGroup(G); return ACEfunc( # arguments fgens, RelatorsOfFpGroup(G), fgens{[1]} # options : echo, mendelsohn, max := 800, mess := 500);