GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
#Example: "3gp-PG-x-i" . . . based on example from Werner #A `by hand' descendants example #vars: F, procId; #options: OutputLevel F := FreeGroup("a", "b"); procId := PqStart(F : Prime := 3); #comment: set a different print level by supplying <OutputLevel> Pq(procId : ClassBound := 1, #sub <OutputLevel> for <1> if set and ok OutputLevel := 1);; PqPCover(procId);; PqPGSupplyAutomorphisms(procId, [ [[1,1], [0,1]], [[0,1], [1,0]] ]);; PqPGExtendAutomorphisms(procId);; PqPGConstructDescendants(procId : ClassBound := 3, BasicAlgorithm);