1: (0 1 3)

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

2: (7 10 18)

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

3: (9 21 13)

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

4: (5 12 8)

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