1: (2 7 15)

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

2: (6 20 8)

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

3: (2 7 15)

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

4: (1 16 3)

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