1: (0 12 16)

(0)(1 20 3)(2 6 4)(5 10 7 12 21 19 17 16 8)(9 14 11)(13 18 15)

2: (5 10 21)

(0)(1 20 3)(2 6 4)(5 19 17 16 8)(7 12 21)(9 14 11)(10)(13 18 15)

3: (9 14 11)

(0)(1 20 3)(2 6 4)(5 19 17 16 8)(7 12 21)(9)(10)(11)(13 18 15)(14)

4: (13 18 15)

(0)(1 20 3)(2 6 4)(5 19 17 16 8)(7 12 21)(9)(10)(11)(13)(14)(15)(18)