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

Answer: vTqJGVJkf


Question: XSnVeAjWLFWTgwmf, WsByLAjWLFWnQfl

Answer: AjWLFW


Question: ixUYDVhLT, ucYDVSE

Answer:
YDV