1: (2 7 15)

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

2: (2 9 12)

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

3: (6 13 11)

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

4: (3 10 8)

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