TASK DEFINITION: In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
PROBLEM: ahPbomjSH, rBbomynK

SOLUTION: bom

PROBLEM: QzJdafaGRLWEguLkOaw, brmPLBoaGRLWEguEaF

SOLUTION: aGRLWEgu

PROBLEM: bAqmfMq, UcdqmfpzA

SOLUTION:
qmf