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

Input: Consider Input: hCRsCCOoLMpjXwI, lVRCOoLMpxaYFbY

Output: COoLMp


Input: Consider Input: UCbReSfuLcbzmBCl, snQRReSfuLcbzmjqVPSdpp

Output: ReSfuLcbzm


Input: Consider Input: whHGPAAxWjRymDURWhXjBOW, upjRymDURWhYRAgGqdlq


Output: jRymDURWh