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

ljwjMioOwfOltGBaE, TneNGsoOwfOlxnWWW
oOwfOl

NwmTIZSnlKGG, qAYIZSnfWRd
IZSn

XFXsHyEoJlTinBYufvfiSTP, YnqJlTinBYuifX

JlTinBYu