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: sEYtoQlG, XIstoQQPw

Answer: toQ


Question: hcmMoVBhK, mdmMoVBjuT

Answer: mMoVB


Question: bMaRuF, XeaRdX

Answer:
aR