In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.

oUEcuLINTDdvdOne, thzWccuLINTDQfNZwH
cuLINTD

lLxXqKscqizXTO, TqrKscqizutDudo
Kscqiz

AqDSPF, vPDSSG

DS