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

Q: sGrHRmELarByxp, cDCUnmELarBXbEfM

A: mELarB
****
Q: hCRsCCOoLMpjXwI, lVRCOoLMpxaYFbY

A: COoLMp
****
Q: hYPjBsd, HxEPjBFI

A:
PjB
****