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

SOLUTION: BuMdiZ

PROBLEM: OVVkkdeHoFlyNROyCP, zFVUJbvkkdeHoFlysF

SOLUTION: kkdeHoFly

PROBLEM: hwEhpmbDeRAQVzFFvFhq, oVfDeRAQVzVJbkF

SOLUTION:
DeRAQVz