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

cxYVucnmEQopeWHrPJ, jNnOaYVucnmEQoSE
YVucnmEQo

TizkNtJUPHfhmGQ, enzehVkNtJUPHunpG
kNtJUPH

ztPqaYoc, IuiPqapS

Pqa