1: (2 9 15)

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

2: (9 16 19)

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

3: (13 20 18)

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

4: (10 17 14)

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