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: OVVkkdeHoFlyNROyCP, zFVUJbvkkdeHoFlysF

Answer: kkdeHoFly


Question: BrDGrTD, PBHDGrDw

Answer: DGr


Question: sVCoSox, fJCoSKs

Answer:
CoS