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

[Q]: MSxTzCpiJAplpzSvLlNJS, oScCpiJAplpNVrqkn
[A]: CpiJAplp


[Q]: iJbjApY, ggwbjAws
[A]: bjA


[Q]: qMBtJkdHycDvQasApSR, VWGKZMtVkdHycDvQmgz
[A]:
kdHycDvQ