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

SOLUTION: qugcvzbHy

PROBLEM: oWwqraAz, uxTqraonu

SOLUTION: qra

PROBLEM: DFXJPyeGb, pSAeJPyekuoI

SOLUTION:
JPye