1: (1 7 10)

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

2: (6 12 8)

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

3: (9 13 11)

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

4: (5 7 10)

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