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.2-2;2-1;1;1 / ordnung.12 / (1)^2(4)^1(12)^3 / min.365
561080 views#g1 6 0 -1 0 0 0 0 1 -1 0 0 0 0 0 0 0 -1 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 -1 2^2 * 3^1 = 12 % order of the group