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

Input: Consider Input: OezHeoe, ouUzHemU

Output: zHe


Input: Consider Input: QaxEaxdouNyyvNAn, wRjWSaxdouNyyrriQiG

Output: axdouNyy


Input: Consider Input: AFYGVtlrlHAAeoFeTqd, YEuDxwFOlrlHAAeoqBEwr


Output: lrlHAAeo