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

cKsJcqYvZO, UrsJcqBC
sJcq

hRVyvwHqnN, geHeyvwHqiBiYJ
yvwHq

EsUBVGNEESWEeQ, wcpSuFcUBVGNEESufMAIV

UBVGNEES