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

Input: Consider Input: yxJxNRLEnKGHziJtfb, KfReWhEnKGHzitzfPWzK

Output: EnKGHzi


Input: Consider Input: JzbEpAquDJFKcNvEWZxVqRV, PFiJlpAquDJFKcNcqOpMeAv

Output: pAquDJFKcN


Input: Consider Input: TxmEPjefIhdhJ, WNYPjefIhwUYGV


Output: PjefIh