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

[Q]: BTvLVMYp, mjOvLVMqYo
[A]: vLVM


[Q]: wDSKHtWbCDqTeoBeiYHdcZD, MydQCwqTeoBeiYHdYMp
[A]: qTeoBeiYHd


[Q]: fvglIbc, BCOglIMP
[A]:
glI