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

Q: yxJxNRLEnKGHziJtfb, KfReWhEnKGHzitzfPWzK

A: EnKGHzi
****
Q: esIMEOgV, tNIMEybb

A: IME
****
Q: XDeplpWl, OteplOsf

A:
epl
****