1: (4 9 18)

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

2: (7 20 10)

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

3: (2 8 4)

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

4: (1 11 3)

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