1: (0 2 6)

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

2: (4 6 21)

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

3: (3 9 5)

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

4: (0 10 7)

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