1: (4 9 12)

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

2: (8 13 11)

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

3: (6 14 12)

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

4: (5 19 7)

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