1: (3 10 20)

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

2: (2 18 4)

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

3: (3 12 5)

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

4: (8 13 11)

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