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

Q: jJjsASFfCqVV, AkjsASFfBFwPy

A: jsASFf
****
Q: aZcGMvzBhazkCIFqpVe, AOljBvzBhazkWXeTuA

A: vzBhazk
****
Q: ZHVHlczyvdLure, ybqQdlczyvdFsgvUI

A:
lczyvd
****