1: (3 8 11)

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

2: (7 20 9)

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

3: (3 8 11)

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

4: (1 10 6)

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