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

QaxEaxdouNyyvNAn, wRjWSaxdouNyyrriQiG
axdouNyy

FNVeaFmprNHqqtAaKv, iGBmrrMveaFmprNHqWWAvtht
eaFmprNHq

VbpfmBtOhW, DiyFpfmBtOloB

pfmBtO

