1: (0 7 8)

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

2: (8 12 19)

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

3: (4 15 9)

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

4: (11 16 13)

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