1: (0 2 16)

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

2: (1 20 7)

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

3: (14 21 18)

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

4: (4 16 17)

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