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

Q: pySBCdpe, AEBCdOR

A: BCd
****
Q: tGBRASi, QABRAtL

A: BRA
****
Q: TLFYsjpPieylA, GtdhRFYsjpPikyko

A:
FYsjpPi
****