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

SOLUTION: mRXDUuU

PROBLEM: pIkAtJHVcvzzZVz, btWerNSHVcvzzZTz

SOLUTION: HVcvzzZ

PROBLEM: CpzNJPOrhWxczQXCGRTiE, IJscwrWgeWxczQXCGRTlCSTL

SOLUTION:
WxczQXCGRT