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

SOLUTION: uYBBdSwIA

PROBLEM: NNpkdhvgT, BMkAkdhvrwV

SOLUTION: kdhv

PROBLEM: KzMjLINQoqueIv, jXPTjLINQoTQCbj

SOLUTION:
jLINQo