1: (0 1 5)

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

2: (5 17 20)

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

3: (16 21 18)

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

4: (2 19 12)

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