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

SOLUTION: Da

PROBLEM: xfZYYDKEqoRRu, ztCeYYDKEqoPG

SOLUTION: YYDKEqo

PROBLEM: bCdVkZJyQNooQSIZaF, vPYvBmJyQNooZTl

SOLUTION:
JyQNoo