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

SOLUTION: coYJFWL

PROBLEM: nxTtNYaazlOyEBApiUSJS, BLazlOyEBCV

SOLUTION: azlOyEB

PROBLEM: VjDXiT, XsDXcy

SOLUTION:
DX