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

Q: EeUODjkxsQeTSNsHYpBKIUvEuAKhB, SrpZeTSNsHYpBKdhPFlgMh

A: eTSNsHYpBK
****
Q: tWJoKSOAuVhmsomA, emdmnBFJoKSOAuVzSgW

A: JoKSOAuV
****
Q: THBeAnwAgNObpvqIn, fYyNgwAgNObtDuZnh

A:
wAgNOb
****