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

Q: AedXEOrEgvnzF, TVTEOrEgvxKuJgv

A: EOrEgv
****
Q: NwmTIZSnlKGG, qAYIZSnfWRd

A: IZSn
****
Q: qwPAJItnmzBNQVS, DrJMItnmzmcDhX

A:
Itnmz
****
