1: (8 16 18)

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

2: (15 20 17)

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

3: (6 18 14)

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

4: (1 9 7)

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