1: (1 12 15)

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

2: (10 18 13)

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

3: (8 12 15)

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

4: (7 11 9)

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