1: (5 7 11)

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

2: (9 11 15)

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

3: (10 17 12)

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

4: (3 8 6)

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