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

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


[Q]: DnAzbgMtdPKsNCMpBfc, QdfXRkWREzbgMtdPKsGx
[A]: zbgMtdPKs


[Q]: NxnaIKuarsPTdrvzctyqEYSLTi, BBpvUjdoGIuarsPTdrvzKuqPWahtqc
[A]:
uarsPTdrvz