1: (4 7 12)

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

2: (6 17 8)

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

3: (3 13 11)

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

4: (5 14 12)

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