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

Input: Consider Input: uGDJixAmSiVaFRmfKRM, NsTGxsJixAmSiVageSw

Output: JixAmSiVa


Input: Consider Input: uHGHiARtdJbuG, OdZmiARtdrhC

Output: iARtd


Input: Consider Input: zsVYpGrViKPtT, DpUpGrViwFNWh


Output: pGrVi