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: YKpdeJQhzyYiPoODACUu, mjmnIlCehzyYiPoOzZ

A: hzyYiPoO
****
Q: AkLxglMwLyHSkLkhvYeuf, anpzisPSLyHSkLkhfQvraH

A:
LyHSkLkh
****