1: (0 8 15)

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

2: (7 16 13)

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

3: (4 18 15)

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

4: (11 17 14)

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