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

Q: bSBuJiZniSlZtO, AcuJiZniSRAOAv

A: uJiZniS
****
Q: oiNEYHxbvAb, bcDDdEYHxbCREd

A: EYHxb
****
Q: bMPNLHELDAhWXgMYjDU, ONJDhQDAhWXgMYjpBP

A:
DAhWXgMYj
****