1: (0 2 3)

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

2: (3 17 20)

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

3: (16 21 18)

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

4: (1 19 7)

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