1: (0 2 6)

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

2: (1 13 5)

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

3: (2 16 18)

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

4: (15 19 17)

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