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

SOLUTION: RAatlaiCm

PROBLEM: nXVXIEGP, fkXIEkU

SOLUTION: XIE

PROBLEM: HskqGIqcGNOOQ, fUIqcGNpGX

SOLUTION:
IqcGN