C2 x S4 x S3
r0 := (2,5)(6,10)(7,11)(9,15)(12,16)(14,17);
r1 := (1,2)(3,6)(4,9)(5,10)(7,13)(8,14)(11,17)(12,18)(15,16);
r2 := (1,3)(2,6)(4,8)(5,10)(7,12)(11,16);
r3 := (1,4)(2,7)(3,8)(5,11)(6,12)(10,16);
F := FreeGroup(4);
r0 := F.1;; r1 := F.2;; r2 := F.3;; r3 := F.4;;
G := F/[ r0^2, r2^2, r3^2, r1^2, (r2*r3)^2, (r0*r3)^2, (r0*r2)^2, (r1*r0*r1*r3)^2, (r1*r0*r1*r2)^2, r1*r2*r0*r3*r1*r3*r0*r2*r1*r0*(r1*r0*r3)^2*r1*r2*r0, (r0*r3*r1*r2*(r0*r3*r1)^2)^2, (r2*r3*(r1*r3*r0)^2*r2*r1)^2 ];;
type 0: 6 elements
type 1: 36 elements
type 2: 4 elements
type 3: 6 elements