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

[Q]: fAsWQxuyBevvLogrSrgg, tmdBEUxuyBevvLogXjiMCbh
[A]: xuyBevvLog


[Q]: HHJAHyvNCGmJEljWrjvHOqf, msPVEbNCGmJEljsKRX
[A]: NCGmJElj


[Q]: UKriHyVhBgrOxcTLlJEQtx, uOWhBgrOxcTLlaQkBVoHG
[A]:
hBgrOxcTLl