1: (9 17 20)

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

2: (6 18 16)

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

3: (9 17 20)

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

4: (5 11 8)

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