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

Input: Consider Input: UldKHMpUYADGfEUGcSon, nPHMpUYADGfEKqHCLPmL

Output: HMpUYADGfE


Input: Consider Input: EPUxsZtt, KgxsZuXM

Output: xsZ


Input: Consider Input: RJMYumLAlhmnbhzKRzIOWsGrxGu, VEViqlihmnbhzKRzIBArjAhYrz


Output: hmnbhzKRzI