1: (0 1 15)

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

2: (4 15 18)

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

3: (2 16 5)

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

4: (15 19 17)

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