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

[Q]: LiiFMMLGfNHVnnga, beXMMLGfNHVsjdfdN
[A]: MMLGfNHV


[Q]: JjEQVKijeyEQ, dwSVKijeywCTvb
[A]: VKijey


[Q]: nZFyiRsoCALWPXI, oMyiRsoCTkAo
[A]:
yiRsoC