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

[Q]: XSnVeAjWLFWTgwmf, WsByLAjWLFWnQfl
[A]: AjWLFW


[Q]: hcmMoVBhK, mdmMoVBjuT
[A]: mMoVB


[Q]: eiUUvuMsFHpiowlMX, xdFsFHpiowcEFe
[A]:
sFHpiow