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

[Q]: ohueEOjHvAuoFVmMFft, ovdJPqOjHvAuoFVGbvxzlnE
[A]: OjHvAuoFV


[Q]: uqDaPS, XyDaMZ
[A]: Da


[Q]: XBRXzHlf, qADXzHrV
[A]:
XzH