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

[Q]: dZJWBGoeoMepPoTg, pekBGoeoMeQP
[A]: BGoeoMe


[Q]: bdCOjNchdKtvWzOI, FwejNchdKhEd
[A]: jNchdK


[Q]: ewATAzyyp, RiATAzgGC
[A]:
ATAz