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

Q: QaxEaxdouNyyvNAn, wRjWSaxdouNyyrriQiG

A: axdouNyy
****
Q: plSfJAktMfac, TCjYJAktlt

A: JAkt
****
Q: DskvwzyjwsqGLEfJDW, cwTnQfSwzyjwsqFzLq

A:
wzyjwsq
****