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

SOLUTION: BlJIEBqgh

PROBLEM: gTjTwC, OUjTgM

SOLUTION: jT

PROBLEM: xApVVoNudhs, MhVVoNwJO

SOLUTION:
VVoN