1: (0 1 5)

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

2: (5 16 20)

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

3: (7 21 19)

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

4: (6 18 8)

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