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

Q: rRmkmETbjzCzZZxihrVdefxfcenJ, ogQtzAgWjKCzZZxihrVdRswMCmngp

A: CzZZxihrVd
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Q: jexvmCmveGzFUimQMx, RVwOSJveGzFUimrcOwjEwe

A: veGzFUim
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Q: KVpGAVXhIrMoyNbM, IjGAVXhIrMoyOuQwTW

A:
GAVXhIrMoy
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