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

Input: Consider Input: TWVTGNBh, nEVTGWq

Output: VTG


Input: Consider Input: lsNwypFwhKP, diEfLwypFwEKqCN

Output: wypFw


Input: Consider Input: TXMwhjj, WuMwhhFY


Output: Mwh