1: (3 6 7)

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

2: (2 7 20)

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

3: (1 9 5)

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

4: (0 17 4)

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