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

SOLUTION: wypFw

PROBLEM: ilgSzrcUKLTNLJbMKMKSt, hFXIuUKLTNLJbMKWxSCkDjY

SOLUTION: UKLTNLJbMK

PROBLEM: qJALgHOsokhURvKdp, HFRanOsLgHOsokmkPyk

SOLUTION:
LgHOsok