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

Input: Consider Input: nOfXJySmVaJIindcJavXh, YpJWmVaJIindcJnoxyRvunG

Output: mVaJIindcJ


Input: Consider Input: IzwlZDJSEFPxfIud, xwWSYwlZDJSEFPbvSXTlS

Output: wlZDJSEFP


Input: Consider Input: GoodBOwvrki, kRCsdBOwvrakgiH


Output: dBOwvr