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

Input: Consider Input: elloYaejTczBiiNOU, XoCPzloYaejTcXYtKODL

Output: loYaejTc


Input: Consider Input: uZSRkFDHsGXNMaggxUn, lTrQKKpsGXNMaggEdSrEX

Output: sGXNMagg


Input: Consider Input: ygtpWtpLSbrTW, OphWtpLSNaC


Output: WtpLS