1: (7 9 16)

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

2: (5 10 8)

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

3: (6 17 15)

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

4: (3 11 9)

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