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

pBDnbfrAxJfVhPBxheXZGp, LMtorAxJfVhPnnaed
rAxJfVhP

TWVTGNBh, nEVTGWq
VTG

XahsOVNUAKBOgbvLkne, IMOVNUAKBOQgcRwks

OVNUAKBO