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

Q: euQWhCovKplukMYznXcD, XAfMhKdzhCovKplukMcMlSuBw

A: hCovKplukM
****
Q: gXwuhXJrEdzGOmLSKdK, TohXJrEdzGavU

A: hXJrEdzG
****
Q: SWeNuVsVPYayTruV, HMiNuVsVPYwQ

A:
NuVsVPY
****