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

EeUODjkxsQeTSNsHYpBKIUvEuAKhB, SrpZeTSNsHYpBKdhPFlgMh
eTSNsHYpBK

BdqUloJanutXoOyfLsuA, NRDloJanutXoOQY
loJanutXoO

uxVDzCNTwxslsvdhtLtq, oRnLwWfQWfVDzCNTwxslJkYmcxUjDF

VDzCNTwxsl