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

Q: edjRAatlaiCmWkpqMh, qDZYVWCDTRAatlaiCmYH

A: RAatlaiCm
****
Q: KvPFobZEGs, eKFobZEtnm

A: FobZE
****
Q: GqoGwBOaBhujUihYK, INaBhujUiQbYmkV

A:
aBhujUi
****