In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
--------
Question: fBpRXPkikQokGVeS, FwUbKXkikQokGos

Answer: kikQokG


Question: GFhJafTV, waHhJaji

Answer: hJa


Question: jnqOhmRGbn, JeBYqOhmMSGG

Answer:
qOhm