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

SOLUTION: hKSaCuNzX

PROBLEM: vJtmxQmHEq, yobgAtmxQmMeoLz

SOLUTION: tmxQm

PROBLEM: jSbHaF, hgbHFV

SOLUTION:
bH