1: (0 3 15)

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

2: (2 18 5)

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

3: (3 17 12)

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

4: (11 16 14)

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