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

edjRAatlaiCmWkpqMh, qDZYVWCDTRAatlaiCmYH
RAatlaiCm

eNuawupVqQ, RIawuplUIf
awup

sTTjSdYMbMGogZjQqE, JyvKEdYMbMGogzxCUWgVJ

dYMbMGog