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

iJbjApY, ggwbjAws
bjA

UysTOtIRtRorNAFKKYD, icDOtIRtRoropYVaKzJ
OtIRtRor

rSzpTo, XbzpsU

zp