1: (0 8 15)

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

2: (6 16 14)

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

3: (5 9 7)

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

4: (13 20 15)

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