instruction:
In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
question:
VeLJEBYpZwxVQlo, EZEBYpZwxVQIxjFj
answer:
EBYpZwxVQ


question:
SsshKSaCuNzXzSTgVc, DNNYLWahKSaCuNzXnAjtq
answer:
hKSaCuNzX


question:
NZdmUSPmsyeZqMeMlrGmp, nAFngUSPmsyeZqMKaIvHF
answer:

USPmsyeZqM