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

Answer: ZYVxgFxPo


Question: tyVlHfTPLRSdFilXnSfqQ, bkTPLRSdFiMgXC

Answer: TPLRSdFi


Question: DwAZmkOGZpNBLclWCVdGJ, zawApNBLclWCVAxmW

Answer:
pNBLclWCV