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

SOLUTION: ESAVHZk

PROBLEM: jexvmCmveGzFUimQMx, RVwOSJveGzFUimrcOwjEwe

SOLUTION: veGzFUim

PROBLEM: iaTclqv, tudTclVzP

SOLUTION:
Tcl