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

[Q]: jJjsASFfCqVV, AkjsASFfBFwPy
[A]: jsASFf


[Q]: DFRoMPNDAzNgtLsEPseOzC, qykyPjDAzNgtLsEPYTsNrJaNK
[A]: DAzNgtLsEP


[Q]: YVIOsbNZdMuDLgMA, GqsazuXAOsbNZdMuDGI
[A]:
OsbNZdMuD