以下两两互为逆任务。

(1)
A
6
abcabc

B
6
ccaabb
3

(2)
A
6
zaaaaz

B
6
zaaaza
1

(3)
A
6
azzzza

B
6
azazzz
3

(4)
A
6
aaazzz
1

B
6
zaaazz
2

(5)
A
6
zzzaaa

B
6
zaaazz
5

(6)
A
78
abcedfghijklmnopqrstuvwxyzabcedfghijklmnopqrstuvwxyzabcedfghijklmnopqrstuvwxyz

B
78
zzzaaabbbeeecccdddfffggghhhiiijjjkkklllmmmnnnooopppqqqrrrssstttuuuvvvwwwxxxyyy
4