1: (6 7 12)

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

2: (5 9 12)

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

3: (8 13 10)

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

4: (3 12 7)

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