1: (3 10 12)

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

2: (9 13 11)

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

3: (1 12 8)

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

4: (2 18 4)

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