1: (1 7 9)

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

2: (6 10 8)

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

3: (4 11 9)

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

4: (3 20 5)

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