1: (3 8 12)

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

2: (2 10 4)

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

3: (9 13 11)

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

4: (3 16 7)

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