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: cCDTMXjGMNikONun, jpcMXjGMNizBEWQzT

Answer: MXjGMNi

Question: PzXzvmYrlGZgOBk, iKnzvmYrlGZgOrs

Answer: zvmYrlGZgO

Question: hhoFMuo, tIDoFMkXX

Answer:
oFM