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

Q: TnHJcxtwcZ, XFdHJcxNKw

A: HJcx
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Q: eFUexDIFlaPDUwrOb, mTvkKGUxDIFlaPDUwxGVpnIwbi

A: xDIFlaPDUw
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Q: MSxTzCpiJAplpzSvLlNJS, oScCpiJAplpNVrqkn

A:
CpiJAplp
****