1: (0 2 4)

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

2: (1 7 3)

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

3: (2 16 19)

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

4: (14 20 18)

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