1: (3 8 12)

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

2: (6 14 9)

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

3: (11 16 13)

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

4: (3 10 7)

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