1: (0 2 5)

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

2: (2 13 18)

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

3: (9 21 15)

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

4: (12 16 14)

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