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

SOLUTION: mVaJIindcJ

PROBLEM: XqyPjqNZDEK, EfwPjqNgjIP

SOLUTION: PjqN

PROBLEM: qNEearbTKlkAzTjxE, fJHTKlkAzTjabfVveDJ

SOLUTION:
TKlkAzTj