C3 : S5
r0 := (2,4)(5,8)(6,10)(9,14)(11,12)(13,15);
r1 := (1,2)(3,6)(5,9)(7,12)(8,13)(14,15);
r2 := (1,3)(2,5)(4,8)(6,9)(10,14)(11,12);
r3 := (2,5)(3,7)(4,8)(6,11)(9,14)(10,12);
F := FreeGroup(4);
r0 := F.1;; r1 := F.2;; r2 := F.3;; r3 := F.4;;
G := F/[ r1^2, r0^2, r2^2, r3^2, (r3*r0)^2, (r0*r2)^2, (r0*r1)^3, (r3*r2)^3, (r1*r2*r3)^4, (r3*r1*r0)^2*r2*r3*r1*r3*r2*r1*r0*r2 ];;
type 0: 5 elements
type 1: 30 elements
type 2: 10 elements
type 3: 15 elements