1: (0 1 16)

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

2: (6 16 20)

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

3: (1 19 10)

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

4: (8 18 15)

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