1: (1 10 12)

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

2: (3 6 12)

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

3: (0 7 5)

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

4: (2 20 4)

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