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

Q: cvRdSsuNwGVEwSSrowDpaOu, gFMcLKIeLwNwGVEwSSroUGskaoloqC

A: NwGVEwSSro
****
Q: BeEgLISxThm, UGLISxEtP

A: LISx
****
Q: KMRjvOLAZyXCMZb, QhaAopHsOLAZyXCMrR

A:
OLAZyXCM
****