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

[Q]: wbdHVigIkjNkuAmbr, iSgIkjNkQYyn
[A]: gIkjNk


[Q]: BdqUloJanutXoOyfLsuA, NRDloJanutXoOQY
[A]: loJanutXoO


[Q]: SggMkFFJODecZrSFeUwvQ, RnpvpyTzMkFFJODecMWxqAmr
[A]:
MkFFJODec