1: (0 12 18)

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

2: (2 21 17)

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

3: (11 19 16)

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

4: (10 20 18)

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