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

SOLUTION: FonizDqCVv

PROBLEM: yPODMimvyQPYWHfcM, aZiotMimvyQPZncH

SOLUTION: MimvyQP

PROBLEM: XVuCiRrePAoPJZfWBMRWyvNY, qufrePAoPJZfSvF

SOLUTION:
rePAoPJZf