1: (1 6 8)

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

2: (5 17 7)

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

3: (2 19 8)

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

4: (15 20 18)

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