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

SOLUTION: XH

PROBLEM: bjjsMtBzzXIgYWPBZmaDL, iTxktmvBzzXIgYWPhbAyBE

SOLUTION: BzzXIgYWP

PROBLEM: mTkpAWrVxN, dgrtakpAWrVexBS

SOLUTION:
kpAWrV

