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

[Q]: XMtSwZVAHsNYhbyDm, asAVAHsNYhSPuNLrV
[A]: VAHsNYh


[Q]: eeoJEtGHPDvHck, ezPGHPDvHSf
[A]: GHPDvH


[Q]: DCtGqeVEgAwJ, JceVEgAvfxsI
[A]:
eVEgA