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: XYnCjAWPHHJ, gmCjAWPHpmwVsm

Answer: CjAWPH


Question: ohueEOjHvAuoFVmMFft, ovdJPqOjHvAuoFVGbvxzlnE

Answer: OjHvAuoFV


Question: JyKFgkAtrLfSOMRacp, qjmwrGKrKFgkAtrLfSALNZgWEmB

Answer:
KFgkAtrLfS