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

SOLUTION: MXjGMNi

PROBLEM: AeYjeKwZQillzpD, SnqviKwZQillrxuTB

SOLUTION: KwZQill

PROBLEM: kepzaaxUJaL, bmCMpzaaxIPB

SOLUTION:
pzaax