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

Q: OBzHWjmkcgVGPyv, gCHWjmkcgVMq

A: HWjmkcgV
****
Q: zBNTHKtofMdHfBgJhOfojzM, VIkVdFapofMdHfBgjPCUo

A: ofMdHfBg
****
Q: tXOcQtcFaCRYhHFESCy, QhtcFaCRYbkAqPpJ

A:
tcFaCRY
****