1: (2 6 16)

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

2: (5 20 7)

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

3: (2 6 16)

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

4: (1 9 4)

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