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

[Q]: OgWFOfjNYmXVjBBvOdunIc, eGljKGnzFKFOfjNYmXVjdlqsT
[A]: FOfjNYmXVj


[Q]: uZSRkFDHsGXNMaggxUn, lTrQKKpsGXNMaggEdSrEX
[A]: sGXNMagg


[Q]: XDqZFhCePdM, tNqZFhCAt
[A]:
qZFhC