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

Q: RpaZAvSnEBgGapIPQgw, wcwYsXvSnEBgGapIwoIWROB

A: vSnEBgGapI
****
Q: feYKRk, PrYKMW

A: YK
****
Q: wfjiDImgKi, midwjiDIdy

A:
jiDI
****