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

SOLUTION: ThdYrGKM

PROBLEM: jXbgnl, lUbglP

SOLUTION: bg

PROBLEM: gLepqYywpKVqMsEd, wlRSywpKVqMsDiVJw

SOLUTION:
ywpKVqMs

