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

SOLUTION: IZvrJmfK

PROBLEM: zqwhMdAdXQfQCAmVNaYZm, toYMIwQeadAdXQfQCAmLyheFOv

SOLUTION: dAdXQfQCAm

PROBLEM: dJZBiZoCUSJuwjvStqqn, dzYRsiZoCUSJuwGDBuOv

SOLUTION:
iZoCUSJuw