1: (1 6 8)

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

2: (5 9 7)

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

3: (4 10 8)

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

4: (3 15 9)

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