1: (0 3 7)

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

2: (1 20 5)

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

3: (2 8 6)

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

4: (0 4 8)

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