1: (2 10 12)

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

2: (8 13 11)

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

3: (1 9 4)

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

4: (3 14 12)

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