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

SOLUTION: OtIRtRor

PROBLEM: gwVLygvd, VOQLyglfo

SOLUTION: Lyg

PROBLEM: yLTqcKNUMAdSSJGOTgp, jlfUMAdSSJuCMu

SOLUTION:
UMAdSSJ