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

Q: bUcuzFgsdfojVR, IdcuzFgsdMRgtMA

A: cuzFgsd
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Q: QzJdafaGRLWEguLkOaw, brmPLBoaGRLWEguEaF

A: aGRLWEgu
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Q: VZiDhowznFDuqA, LuTlWdiDhowzZouh

A:
iDhowz
****