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: EeUODjkxsQeTSNsHYpBKIUvEuAKhB, SrpZeTSNsHYpBKdhPFlgMh

SOLUTION: eTSNsHYpBK

PROBLEM: EbaKfRdeRHWE, QmDRKfRdeRHhi

SOLUTION:
KfRdeRH