1: (0 10 12)

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

2: (9 16 11)

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

3: (5 18 15)

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

4: (6 10 13)

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