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

Answer: TWbL

Question: jyJrDIhxJtWbnooEXZ, uyXifNCIhxJtWbnVCUrt

Answer: IhxJtWbn

Question: XVuCiRrePAoPJZfWBMRWyvNY, qufrePAoPJZfSvF

Answer:
rePAoPJZf