1: (0 1 16)

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

2: (6 16 21)

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

3: (3 19 12)

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

4: (11 18 15)

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