1: (0 1 5)

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

2: (5 16 20)

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

3: (15 21 19)

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

4: (2 17 14)

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