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

Q: zBNTHKtofMdHfBgJhOfojzM, VIkVdFapofMdHfBgjPCUo

A: ofMdHfBg
****
Q: sOSXbnluNuvwMETKda, JzXbnluNuvyeVHO

A: XbnluNuv
****
Q: RuBbMorwcEDtAioRwbpZk, jdorwcEDtAibOukt

A:
orwcEDtAi
****