1: (6 8 15)

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

2: (5 10 7)

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

3: (2 13 8)

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

4: (9 14 11)

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