1: (2 9 12)

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

2: (1 10 8)

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

3: (6 13 11)

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

4: (2 17 7)

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