1: (2 7 15)

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

2: (1 9 3)

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

3: (2 7 15)

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

4: (5 11 8)

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