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

SOLUTION: cuzFgsd

PROBLEM: LJJvLTK, jpFJvLqh

SOLUTION: JvL

PROBLEM: DlEnsFeyzzP, OensFetyc

SOLUTION:
nsFe