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

Q: RJMYumLAlhmnbhzKRzIOWsGrxGu, VEViqlihmnbhzKRzIBArjAhYrz

A: hmnbhzKRzI
****
Q: wXGerDNhSNnCCedyzskswVnh, BfFNhSNnCCedybrUbI

A: NhSNnCCedy
****
Q: tzBrYJkUEymldjBLG, OykkUEymldoh

A:
kUEymld
****