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

SOLUTION: hXJrEdzG

PROBLEM: VutZiVkDQcVpQO, BDQVDyBdiVkDQcVpuvNN

SOLUTION: iVkDQcVp

PROBLEM: zpmiNLMOLbhIMcCDH, qQWLMOLbhIMcPYyxFjhA

SOLUTION:
LMOLbhIMc