1: (0 4 7)

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

2: (3 9 5)

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

3: (2 20 7)

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

4: (4 17 6)

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