1: (0 2 15)

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

2: (1 18 3)

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

3: (2 17 10)

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

4: (5 16 14)

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