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

SOLUTION: nz

PROBLEM: fAsWQxuyBevvLogrSrgg, tmdBEUxuyBevvLogXjiMCbh

SOLUTION: xuyBevvLog

PROBLEM: EDMvYtFCyQKUALXtMD, GTtFCyQKUZpW

SOLUTION:
tFCyQKU