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

Q: yjoJzBGdwfOhsceoOpoap, uSLMdBGdwfOhsIQHBijd

A: BGdwfOhs
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Q: UCbReSfuLcbzmBCl, snQRReSfuLcbzmjqVPSdpp

A: ReSfuLcbzm
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Q: HjziPkeRYtmyRdlfAbIghxsH, WYGOrOdYtmyRdlfIFWBEF

A:
YtmyRdlf
****