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

zBNTHKtofMdHfBgJhOfojzM, VIkVdFapofMdHfBgjPCUo
ofMdHfBg

mXHhaCEIwqwEZcz, JZPXbYHhaCEIwZmna
HhaCEIw

pqpeZmesLjZdozZAP, LZfasLjZdozZEKnoN

sLjZdozZ