1: (2 8 15)

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

2: (7 20 13)

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

3: (0 18 3)

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

4: (1 15 6)

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