1: (2 5 20)

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

2: (3 5 9)

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

3: (0 19 7)

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

4: (6 11 8)

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