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

SOLUTION: zISsXK

PROBLEM: TizkNtJUPHfhmGQ, enzehVkNtJUPHunpG

SOLUTION: kNtJUPH

PROBLEM: JquxHi, EKuxzW

SOLUTION:
ux