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

SOLUTION: JoKSOAuV

PROBLEM: bOvlVNWf, iivlVzWt

SOLUTION: vlV

PROBLEM: cRezhDA, CBezhZcT

SOLUTION:
ezh