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

Q: mjCEUoPmeKbvCgUtUL, SrHtrPmeKbvYpQAVp

A: PmeKbv
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Q: zqwhMdAdXQfQCAmVNaYZm, toYMIwQeadAdXQfQCAmLyheFOv

A: dAdXQfQCAm
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Q: tyVlHfTPLRSdFilXnSfqQ, bkTPLRSdFiMgXC

A:
TPLRSdFi
****