In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
--------
Question: cjDuPZOHjystHnF, okWVdUDuPZOHjSCaEecP

Answer: DuPZOHj


Question: oDdulHNcCdgbRGxiBTxM, kDcCdgbRGnsJlvas

Answer: cCdgbRG


Question: hZLVHsnIiAHOscycLUeuE, PdtUsnIiAHOsryC

Answer:
snIiAHOs