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

SOLUTION: ZjIcpidm

PROBLEM: ilgSzrcUKLTNLJbMKMKSt, hFXIuUKLTNLJbMKWxSCkDjY

SOLUTION: UKLTNLJbMK

PROBLEM: isYRUeJyeCOPctjzj, DiXYsvUeJyeCOwbN

SOLUTION:
UeJyeCO