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

SOLUTION: uNemHG

PROBLEM: ktABEFESAVHZkkY, uMjxiESAVHZkZgWUte

SOLUTION: ESAVHZk

PROBLEM: WcRdfvTWIRzp, pbfvTWLgC

SOLUTION:
fvTW