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

SOLUTION: DHRCWxdPb

PROBLEM: OYERnjubLFovtcS, FngzQJVGERnjubLFafmzq

SOLUTION: ERnjubLF

PROBLEM: kJTVEq, zYTVmo

SOLUTION:
TV