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

Q: OUNqomxFcLXhWdfB, gdqomxFcLHQPCu

A: qomxFcL
****
Q: yxJxNRLEnKGHziJtfb, KfReWhEnKGHzitzfPWzK

A: EnKGHzi
****
Q: owpMWfmiJtWLwBInIELRa, WqVYvBiJtWLwByCamzd

A:
iJtWLwB
****
