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