1: (0 3 7)

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

2: (2 9 5)

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

3: (0 3 7)

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

4: (6 19 8)

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