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

SOLUTION: gGqsXYl

PROBLEM: XpFCxFOgTTNCnQzMnVPV, FMqzdOwgTTNCnQzedorxVPe

SOLUTION: gTTNCnQz

PROBLEM: JZAiQSvahKE, eqsbXQSvahHRoG

SOLUTION:
QSvah