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

SOLUTION: MpQyanUT

PROBLEM: YKpdeJQhzyYiPoODACUu, mjmnIlCehzyYiPoOzZ

SOLUTION: hzyYiPoO

PROBLEM: pRnsXqJAnZUSp, nvSZgbnsXqJAnZUHofSLT

SOLUTION:
nsXqJAnZU