1: (0 11 15)

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

2: (10 17 12)

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

3: (9 19 15)

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

4: (8 20 18)

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