GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
#2 5x5 0 -1 0 1 0 0 0 0 1 0 0 -1 1 0 0 1 0 0 0 0 0 0 -1 0 2 5x5 0 1 0 0 1 0 0 0 1 1 0 0 1 0 1 1 0 0 0 0 0 -1 -1 -1 1 dim5/3;1,1a
