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

[Q]: JAGuNgaUudP, eojvKNgaUuQg
[A]: NgaUu


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


[Q]: iGhRye, xThRmO
[A]:
hR