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

SOLUTION: yALRSDknU

PROBLEM: AxAmDG, LTAmEV

SOLUTION: Am

PROBLEM: QaxEaxdouNyyvNAn, wRjWSaxdouNyyrriQiG

SOLUTION:
axdouNyy