GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
# This is the fifth example from the XGAP manual: # A finitely presented group. f := FreeGroup(2); g := f/[f.1^6]; s := GraphicSubgroupLattice(g); IdGroup(SymmetricGroup(3)); s3 := SmallGroup(6,1); IMAGE_GROUP := s3;;