1: (0 1 2)

(0)(1 17 10 3 2 21 19 6 4)(5 12 9)(7 14 8)(11 16 13)(15 20 18)

2: (6 17 19)

(0)(1 17 4)(2 21 19 10 3)(5 12 9)(6)(7 14 8)(11 16 13)(15 20 18)

3: (15 20 18)

(0)(1 17 4)(2 21 19 10 3)(5 12 9)(6)(7 14 8)(11 16 13)(15)(18)(20)

4: (3 19 10)

(0)(1 17 4)(2 21 19)(3)(5 12 9)(6)(7 14 8)(10)(11 16 13)(15)(18)(20)