1: (0 10 12)

(0)(1 19 3)(2 6 4)(5 10 20 12 7)(8 17 13)(9 15 11)(14 18 16)

2: (9 15 11)

(0)(1 19 3)(2 6 4)(5 10 20 12 7)(8 17 13)(9)(11)(14 18 16)(15)

3: (7 20 12)

(0)(1 19 3)(2 6 4)(5 10 20)(7)(8 17 13)(9)(11)(12)(14 18 16)(15)

4: (8 17 13)

(0)(1 19 3)(2 6 4)(5 10 20)(7)(8)(9)(11)(12)(13)(14 18 16)(15)(17)