1: (2 7 12)

(0 20 1)(2 16 14 12 5)(3 18 10 6 4)(7 19 9)(8 13 11)(15 21 17)

2: (6 18 10)

(0 20 1)(2 16 14 12 5)(3 18 4)(6)(7 19 9)(8 13 11)(10)(15 21 17)

3: (8 13 11)

(0 20 1)(2 16 14 12 5)(3 18 4)(6)(7 19 9)(8)(10)(11)(13)(15 21 17)

4: (5 14 12)

(0 20 1)(2 16 14)(3 18 4)(5)(6)(7 19 9)(8)(10)(11)(12)(13)(15 21 17)