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

[Q]: zBNTHKtofMdHfBgJhOfojzM, VIkVdFapofMdHfBgjPCUo
[A]: ofMdHfBg


[Q]: CwTYJWQbzEZkvcqKn, hBnhJWQbzEZkKmVM
[A]: JWQbzEZk


[Q]: rEHxRBOktYreNkK, NCOktYreFFCFwi
[A]:
OktYre