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

[Q]: hCRsCCOoLMpjXwI, lVRCOoLMpxaYFbY
[A]: COoLMp


[Q]: fAsWQxuyBevvLogrSrgg, tmdBEUxuyBevvLogXjiMCbh
[A]: xuyBevvLog


[Q]: jhnsvviiHQJCT, jVkaUjsvviiHQJJzptR
[A]:
svviiHQJ