1: (1 4 7)

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

2: (3 17 5)

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

3: (6 18 14)

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

4: (1 4 7)

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