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