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

[Q]: eedZoMwKgDhdsgs, kMMwKgDLm
[A]: MwKgD


[Q]: WlqGjLNrxXeUrKCZel, pDSsmNrxXeUrKCslBXBbRu
[A]: NrxXeUrKC


[Q]: yLvfKTOALfSUoSH, NOOALfSUoxu
[A]:
OALfSUo