1: (8 16 18)

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

2: (15 19 17)

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

3: (6 18 13)

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

4: (7 14 9)

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