1: (3 7 21)

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

2: (2 8 6)

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

3: (1 10 7)

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

4: (0 20 8)

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