1: (3 10 20)

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

2: (1 12 9)

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

3: (4 10 18)

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

4: (0 6 2)

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