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: YWNPkA, LuNPnN

Answer: NP


Question: wrVsKN, mOVsWo

Answer: Vs


Question: ytoPbYuCncWoFWbfQSQKyn, eUiwLPyCncWoFWbftOXAhs

Answer:
CncWoFWbf


