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

SOLUTION: coYJFWL

PROBLEM: ylyLVUjsmMrXMFAPDGIZsHq, cYymMrXMFAPjm

SOLUTION: mMrXMFAP

PROBLEM: VkZSHBzht, XBpSHBUMN

SOLUTION:
SHB