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

Q: EPUxsZtt, KgxsZuXM

A: xsZ
****
Q: ATmVEtUuZOgsBUuL, UMUuZOgsBPVT

A: UuZOgsB
****
Q: cohCAouVtprOSDivSxI, pJDqqkXhCAouVtprARmf

A:
hCAouVtpr
****