1: (3 8 11)

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

2: (2 8 16)

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

3: (7 12 9)

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

4: (2 11 4)

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