GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
gap4r8 / pkg / carat / carat-2.1b1 / tables / qcatalog / dim6 / dir.2-1',2-1';1,1 / ordnung.4 / (2)^1(8)^2 / min.202
561054 views#g1 6 0 1 0 0 0 0 -1 0 0 0 0 0 0 1 0 -1 0 0 -1 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 2^2 = 4 % order of the group