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

[Q]: DwLGzwYOWjtzIunE, TTViSbkwYOWjtzNqUOOz
[A]: wYOWjtz


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


[Q]: dinmJsNcojSZfyJOkkzKnRw, bsDIXMjouJsNcojSZfykjVlKb
[A]:
JsNcojSZfy