1: (0 2 16)

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

2: (1 17 9)

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

3: (4 16 21)

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

4: (3 13 5)

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