1: (7 9 15)

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

2: (5 11 15)

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

3: (3 8 6)

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

4: (10 17 12)

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