1: (6 11 12)

(0 19 2)(1 8 4)(3 11 18 12 10)(5 14 7)(6)(9 16 13)(15 20 17)

2: (3 11 10)

(0 19 2)(1 8 4)(3)(5 14 7)(6)(9 16 13)(10 18 12)(11)(15 20 17)

3: (5 14 7)

(0 19 2)(1 8 4)(3)(5)(6)(7)(9 16 13)(10 18 12)(11)(14)(15 20 17)

4: (1 8 4)

(0 19 2)(1)(3)(4)(5)(6)(7)(8)(9 16 13)(10 18 12)(11)(14)(15 20 17)