1: (0 2 15)

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

2: (1 18 4)

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

3: (2 17 12)

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

4: (11 16 14)

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