1: (2 8 16)

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

2: (7 20 9)

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

3: (2 8 16)

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

4: (0 18 3)

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