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: wXGerDNhSNnCCedyzskswVnh, BfFNhSNnCCedybrUbI

A: NhSNnCCedy
****
Q: BPFTrLOUOjcmrsfNH, TXTrLOUOjqELQENj

A:
TrLOUOj
****