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

[Q]: osmJJcZlDAXBgJFsJKa, rzPNlDAXBgJYrgXlH
[A]: lDAXBgJ


[Q]: yywhNdZQkLSzbOvhluicHA, lfZQkLSzbOvhVC
[A]: ZQkLSzbOvh


[Q]: OKQufdHOFymQlKq, ogfdHOFyfgJ
[A]:
fdHOFy