1: (0 1 9)

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

2: (7 9 21)

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

3: (6 17 8)

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

4: (1 20 9)

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