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

SOLUTION: RGKkpALcKd

PROBLEM: SIIPePlrkftKkzfgdjg, JqNnXHrkftKkzOMUwmc

SOLUTION: rkftKkz

PROBLEM: kaujjSCwMkVAyxHMWY, vqefSSCwMkVAyxdo

SOLUTION:
SCwMkVAyx