1: (2 6 12)

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

2: (8 12 17)

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

3: (7 15 9)

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

4: (11 16 14)

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