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: QvtDqzQiSknPbRCG, hVxHdqzQiSknPbumdpNIf

SOLUTION: qzQiSknPb

PROBLEM: hvmoAemdpinwh, CEWgGemdpiuT

SOLUTION:
emdpi