1: (0 11 18)

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

2: (8 20 17)

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

3: (5 11 19)

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

4: (3 9 7)

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