GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
M:=[[1,2,5],[1,4,5],[2,3,6],[2,5,6],[1,3,4],[3,4,6],[4,7,8],[4,5,8],[5,8,9],[5,6,9],[6,7,9],[4,6,7],[1,2,7],[2,7,8],[2,3,8],[3,8,9],[1,3,9],[1,7,9]]; G:=Group(()); iso:=rec(); mu:=[]; dim := 4;