1: (0 8 15)

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

2: (7 17 11)

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

3: (6 9 15)

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

4: (10 17 13)

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