GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
9 16 1 1 1 1 -1 -1 -1 -1 0 0 0 0 0 0 0 0 1 1 1 1 0 0 0 0 -1 -1 -1 -1 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 -1 -1 -1 -1 0 1 1 1 -1 0 0 0 -1 0 0 0 -1 0 0 0 1 0 1 1 0 -1 0 0 0 -1 0 0 0 -1 0 0 1 1 0 1 0 0 -1 0 0 0 -1 0 0 0 -1 0 1 1 1 0 0 0 0 -1 0 0 0 -1 0 0 0 -1 0 1 1 1 0 -1 0 0 0 0 -1 0 0 0 0 -1 1 1 1 0 0 0 -1 0 0 -1 0 0 -1 0 0 0 equations 1 16 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 grading