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

Q: rEHxRBOktYreNkK, NCOktYreFFCFwi

A: OktYre
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Q: LJJvLTK, jpFJvLqh

A: JvL
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Q: PnMGqLoSUiglcFAHA, TcIxjbHWHLoSUiglcFbq

A:
LoSUiglcF
****