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

SOLUTION: RAatlaiCm

PROBLEM: oZNKLmfxecDfkXEGFkRBYk, tReqkiExecDfkXEGtNZpJVRxC

SOLUTION: xecDfkXEG

PROBLEM: vQRpvmpHJdZgx, JsGvbXHwBRpvmpHJdZIPnEYLy

SOLUTION:
RpvmpHJdZ