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

[Q]: KTAFonizDqCVvucpJWrItdw, rfFonizDqCVvYbGhb
[A]: FonizDqCVv


[Q]: TUAHhdvHIBxogI, LjfGsAHhdvHJcSdNV
[A]: AHhdvH


[Q]: ccAjAdCOXavpgWvoRbRmWic, KqmCOpWoMsXavpgWvoRbnmfzlFit
[A]:
XavpgWvoRb