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

[Q]: SQNzngllNbOkKDK, MijfNzngllNDfWge
[A]: NzngllN


[Q]: yJRITYgVTSNsPjG, NSIdKYgVTSNmj
[A]: YgVTSN


[Q]: WULcVeIB, fMcVeWM
[A]:
cVe