1: (0 6 8)

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

2: (8 12 20)

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

3: (7 15 9)

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

4: (11 17 13)

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