1: (0 1 15)

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

2: (6 15 19)

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

3: (2 17 12)

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

4: (10 16 14)

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