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

SOLUTION: gsO

PROBLEM: TUAHhdvHIBxogI, LjfGsAHhdvHJcSdNV

SOLUTION: AHhdvH

PROBLEM: sMVNfRoGEIZlnldHWWwpdFAFf, aWKgZlnldHWWwpHWSNyWG

SOLUTION:
ZlnldHWWwp