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

Q: pIkAtJHVcvzzZVz, btWerNSHVcvzzZTz

A: HVcvzzZ
****
Q: GnElFKBIoYmAdvz, GrElFKBIoMo

A: ElFKBIo
****
Q: UagEwjSxAYfphovTI, HEuwEwjSxAYzJRBZh

A:
EwjSxAY
****