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

Q: JAGuNgaUudP, eojvKNgaUuQg

A: NgaUu
****
Q: hCRsCCOoLMpjXwI, lVRCOoLMpxaYFbY

A: COoLMp
****
Q: itlqfMpKKvTNNjd, ragnMpKKvTHe

A:
MpKKvT
****