1: (2 6 11)

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

2: (6 15 19)

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

3: (1 8 3)

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

4: (5 10 7)

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