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

Q: fdinRdwwlntwqzYGhV, ZefonRdwwlntoWQbh

A: nRdwwlnt
****
Q: iJbjApY, ggwbjAws

A: bjA
****
Q: kaujjSCwMkVAyxHMWY, vqefSSCwMkVAyxdo

A:
SCwMkVAyx
****