1: (2 4 8)

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

2: (6 8 20)

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

3: (0 16 3)

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

4: (5 11 7)

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