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

Q: koddLvYmRXDUuUnW, GnqDYGmmRXDUuUquAnf

A: mRXDUuU
****
Q: HEVqGddewrNqiZ, iyvlddewrNXr

A: ddewrN
****
Q: pMpNZSEJhNjdy, wqwLpNZSEJhfY

A:
pNZSEJh
****