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

SOLUTION: hydBo

PROBLEM: jJjsASFfCqVV, AkjsASFfBFwPy

SOLUTION: jsASFf

PROBLEM: poncWwtQJ, cYcWwdm

SOLUTION:
cWw