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

SOLUTION: GPQVPrqP

PROBLEM: osmJJcZlDAXBgJFsJKa, rzPNlDAXBgJYrgXlH

SOLUTION: lDAXBgJ

PROBLEM: mdYpKHJiIRRUfxKcvoLc, EFLEEXiIRRUfxKcvKwOrSap

SOLUTION:
iIRRUfxKcv