In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.

Q: SUueHhzGsanfsalEEc, KygEhzGsanfsapbKKX

A: hzGsanfsa
****
Q: TvNVpHLPYjBCeUpyxlzFZ, tgKdPKVYjBCeUpyPK

A: YjBCeUpy
****
Q: eedZoMwKgDhdsgs, kMMwKgDLm

A:
MwKgD
****