1: (2 9 16)

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

2: (6 18 15)

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

3: (5 12 7)

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

4: (11 16 13)

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