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

Input: Consider Input: ljwjMioOwfOltGBaE, TneNGsoOwfOlxnWWW

Output: oOwfOl


Input: Consider Input: ZGkBNEDRAwURXnxBIOJkzTvg, HMAwURXnxBMfGbPOBf

Output: AwURXnxB


Input: Consider Input: MRoQekoZSTRDuv, CxQekoZSrmrwyw


Output: QekoZS