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

SOLUTION: kkdeHoFly

PROBLEM: nTAXUw, OWAXYU

SOLUTION: AX

PROBLEM: VSvHzemh, XZrvHzetgA

SOLUTION:
vHze