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

Q: SUgXyznbUQRpiLUTlRb, jlnwLTnbUQRpioUFyJ

A: nbUQRpi
****
Q: HaIPcFXLhYDp, AdIPcFXtJdRE

A: IPcFX
****
Q: HbEJNwIDoALVXjGL, OaDhjqsVEJNwIDoAcGZ

A:
EJNwIDoA
****