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

HorIyjpfBFmKZQUIEoP, AcWOaOgVPmyjpfBFmKZQPFYiI
yjpfBFmKZQ

VGRjWGHRcBdFmkVg, eSwqALQXWGHRcBdFsDXCM
WGHRcBdF

uVjgToezoYCyxSu, tMmDdToezoYXFGj

ToezoY