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

SOLUTION: equ

PROBLEM: elloYaejTczBiiNOU, XoCPzloYaejTcXYtKODL

SOLUTION: loYaejTc

PROBLEM: mhCaDafGpuNUwIinnligqn, qyrTXaDafGpuNUwcUChsfaqbZ

SOLUTION:
aDafGpuNUw