A5 : S3
r0 := (2,4)(5,7)(8,10)(9,12)(11,15)(13,14);
r1 := (1,2)(3,5)(6,9)(8,11)(10,14)(13,15);
r2 := (1,3)(2,5)(4,7)(9,13)(11,15)(12,14);
r3 := (3,6)(5,8)(7,10)(9,13)(11,15)(12,14);
F := FreeGroup(4);
r0 := F.1;; r1 := F.2;; r2 := F.3;; r3 := F.4;;
G := F/[ r1^2, r3^2, r0^2, r2^2, (r2*r0)^2, (r0*r3)^2, (r2*r3)^3, (r0*r1)^3, r3*r1*r3*r0*r1*r3*r1*r0*r1, r0*r1*r2*r1*r0*(r2*r1)^2*r2, (r3*(r1*r2)^2*r1)^2, (r3*(r1*r2)^2)^3 ];;
type 0: 3 elements
type 1: 30 elements
type 2: 15 elements
type 3: 10 elements