C2 x (((C2 x C2 x C2 x C2) : C3) : C2)
r0 := (1,2)(3,5)(4,7)(6,10)(8,11)(9,12);
r1 := (2,4)(3,6)(5,9)(8,12)(10,11);
r2 := (1,3)(2,5)(4,8)(6,10)(7,11);
r3 := (1,3)(2,5)(4,8)(7,11)(9,12);
F := FreeGroup(4);
r0 := F.1;; r1 := F.2;; r2 := F.3;; r3 := F.4;;
G := F/[ r2^2, r0^2, r1^2, r3^2, (r2*r3)^2, (r0*r2)^2, (r3*r0)^2, (r3*r2*r0)^2, (r1*r3)^3, (r0*r1)^4, (r1*r0*r3)^3, (r1*r0*r1*r2)^2*r0, (r3*r2*r1)^4, (r2*r1)^3*r2*r0*(r1*r2)^2*r1*r0 ];;
type 0: 4 elements
type 1: 24 elements
type 2: 8 elements
type 3: 4 elements