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

SOLUTION: JixAmSiVa

PROBLEM: yOGvgtAmwMwcIRtJ, cQtAmwMwcIRjfjO

SOLUTION: tAmwMwcIR

PROBLEM: SwEZfHhQ, acEZfBr

SOLUTION:
EZf