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

SOLUTION: WTTPho

PROBLEM: IKrQfT, crrQRg

SOLUTION: rQ

PROBLEM: UwcKnNPgsDSj, lcNPgsDqlW

SOLUTION:
NPgsD