1: (1 3 7)

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

2: (2 9 5)

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

3: (1 3 7)

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

4: (6 11 8)

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