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

yITbYie, TlqTbYomH
TbY

UTdardKNThdYrGKMqZPeg, mvrThdYrGKMlcCxBtak
ThdYrGKM

eGnHlMipPV, YPQHlMiYm

HlMi