1: (3 6 11)

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

2: (7 11 20)

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

3: (1 8 5)

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

4: (4 13 10)

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