1: (0 2 4)

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

2: (1 8 3)

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

3: (4 18 20)

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

4: (16 21 19)

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