1: (0 4 8)

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

2: (3 9 5)

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

3: (2 20 8)

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

4: (4 10 6)

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