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

cjDuPZOHjystHnF, okWVdUDuPZOHjSCaEecP
DuPZOHj

nTAXUw, OWAXYU
AX

wNEruUGIOnDilLiycbcldcHCe, aMAlOnDilLiycbFonED

OnDilLiycb