GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it
1 prime 11 class 3 generators {a, b, c} relations {a^11, b^11, c^11, [b, a, a, a, b, a] = 1, [c, a] = 1, [c, b] = 1, [b, a, b]} ; 2 Standard 8 11 1 0 0 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 1 0 9 0 0 0 1 0 0 0 0 0 1 0 0 1 7 8 0 0 0 1 0 0 0 0 0 1 0 0 10 0 0 0 0 0 1 0 0 0 0 0 1 0 0 2 0 0 0 0 0 1 0 0 0 0 0 1 0 0 1 0 8 0 0 0 1 3 0 0 0 0 1 0 0 1 0 9 0 0 0 1 0 0 0 0 0 3 0 0 1 0 2 0 0 0 1 0 0 0 0 0 10 0 0 1 9 10 0 0 0 3 7 0 0 0 0 6 0 0 1 5 9 0 0 0 7 4 0 0 0 0 10 0 0 1 0