1: (0 2 12)

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

2: (1 21 3)

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

3: (2 14 4)

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

4: (8 16 13)

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