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

Q: DZfOjrQffR, CXOjrQQc

A: OjrQ
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Q: ScUCglVzZFPjLVofNHOumU, mNodEXwpZFPjLVofYfSnBM

A: ZFPjLVof
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Q: RZgjsqBlLhKEUDee, pBrSHcrujsqBlLhKdubMA

A:
jsqBlLhK
****