TASK DEFINITION: In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
PROBLEM: andNlOdIcQMyZvc, vCMENolkslOdIcQMyZJtCFo

SOLUTION: lOdIcQMyZ

PROBLEM: uRLpAWCotLmxcSmKyvo, laotLmxcSmKyBwVfJB

SOLUTION: otLmxcSmKy

PROBLEM: aMcFNol, UKgcFNCzl

SOLUTION:
cFN