1: (1 5 7)

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

2: (4 12 6)

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

3: (1 15 9)

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

4: (10 18 13)

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