1: (2 9 15)

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

2: (6 19 10)

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

3: (14 20 17)

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

4: (9 16 11)

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