1: (5 9 12)

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

2: (3 10 8)

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

3: (7 13 11)

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

4: (6 14 12)

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