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

SOLUTION: yFsYqpmm

PROBLEM: nuwMzarLqoPvabJla, JKcrLqoPvabJNDCILGQ

SOLUTION: rLqoPvabJ

PROBLEM: eKLYbMdovyCWAGBytq, UErWNxvHvyCWAGBycf

SOLUTION:
vyCWAGBy