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

[EX Q]: kWnjCoVmCSVuW, RILPKCoVmCSVbaOza
[EX A]: CoVmCSV

[EX Q]: hUpEbyvEcQ, dHpEbyvEvwsXcN
[EX A]: pEbyvE

[EX Q]: ipUqFptuCbTCRTlY, HuYBmUqFptuCNIzO
[EX A]:
UqFptuC