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

Q: JAGuNgaUudP, eojvKNgaUuQg

A: NgaUu
****
Q: XMtSwZVAHsNYhbyDm, asAVAHsNYhSPuNLrV

A: VAHsNYh
****
Q: iCfpnCvCxXbYNyncluePCyQAdjbpke, LGbYNyncluePufm

A:
bYNynclueP
****