1: (5 11 15)

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

2: (10 18 12)

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

3: (2 15 9)

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

4: (1 6 3)

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