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

Q: LJJvLTK, jpFJvLqh

A: JvL
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Q: BICndZkjoSidWivWATvtqsS, FzVWjoSidWivFaQhkRT

A: joSidWiv
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Q: ohpvEVJOVaLcGcEVusOqPmgjmj, elwJOVaLcGcEVRZnQwUF

A:
JOVaLcGcEV
****