1: (0 1 8)

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

2: (3 8 18)

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

3: (2 16 5)

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

4: (14 19 17)

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