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

Input: Consider Input: OVVkkdeHoFlyNROyCP, zFVUJbvkkdeHoFlysF

Output: kkdeHoFly


Input: Consider Input: HKqfdEvqDuGhWByFlzIEeYh, VVaZfkLCMuGhWByFlzIOZaXbMCA

Output: uGhWByFlzI


Input: Consider Input: QoLjIeaSjypTLYYpRLiQEqEqHPd, ahPGTzypTLYYpRLiyCUpkFo


Output: ypTLYYpRLi