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

SOLUTION: zKRbu

PROBLEM: XEvxzelZaWRO, zXIelZaWBUn

SOLUTION: elZaW

PROBLEM: TbKhLDmgP, MlhLDyb

SOLUTION:
hLD