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

Q: EOwHDdhJcP, DrIuDdhJYw

A: DdhJ
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Q: HiGmCdXrmFRJYWLvZbpU, IxhkrmFRJYWLvZLaqRVxPkL

A: rmFRJYWLvZ
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Q: axPrcSPqsevNmMTwiSwodpfgyK, NSHbxFBsevNmMTwilp

A:
sevNmMTwi
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