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

Q: RJMYumLAlhmnbhzKRzIOWsGrxGu, VEViqlihmnbhzKRzIBArjAhYrz

A: hmnbhzKRzI
****
Q: ZyrpGdXvvtrKQIxU, CLNGdXvvtrKQDpicfqLdt

A: GdXvvtrKQ
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Q: sJQaZGATapMDPISRkZ, lCJQllDSapMDPISRHSK

A:
apMDPISR
****