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

SOLUTION: iRgqAYHykr

PROBLEM: SyweIt, ILweip

SOLUTION: we

PROBLEM: vVHtghMcaePNtYsj, VhIkFtghMcaeSE

SOLUTION:
tghMcae