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

Q: hcmMoVBhK, mdmMoVBjuT

A: mMoVB
****
Q: LiiFMMLGfNHVnnga, beXMMLGfNHVsjdfdN

A: MMLGfNHV
****
Q: uAiUbMfdctQBJx, PsyAlwJtUbMfdctQHPOOtnB

A:
UbMfdctQ
****