1: (0 8 16)

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

2: (7 19 9)

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

3: (8 18 11)

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

4: (10 17 13)

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