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

[Q]: wcJmSloqlddFOfv, szhUIAqzSloqlddFDJz
[A]: SloqlddF


[Q]: bVlwKYBYmcNq, hBlwKYBprL
[A]: lwKYB


[Q]: RwqzMTeLMdPx, qaWtYhqzMTeLMdHbWDT
[A]:
qzMTeLMd