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: sRTQgRgRUjEooapKdR, vzsBgRUjEooLBkYeH

Answer: gRUjEoo


Question: GBTHKtWUzK, ovVNKtWUmVJF

Answer: KtWU


Question: TzaJTB, oDaJFC

Answer:
aJ