1: (1 9 12)

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

2: (7 13 11)

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

3: (2 10 8)

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

4: (5 14 12)

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