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

esIMEOgV, tNIMEybb
IME

QzJdafaGRLWEguLkOaw, brmPLBoaGRLWEguEaF
aGRLWEgu

hAjFjynquuAfWqrG, yOEWHKUNynquuAfWjkonESka

ynquuAfW