1: (0 9 16)

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

2: (8 17 13)

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

3: (1 10 16)

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

4: (12 17 15)

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