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

SOLUTION: OjHvAuoFV

PROBLEM: mRVieYomZqJXaTDsShCyfPW, ifOAlnptmZqJXaTDsVMqY

SOLUTION: mZqJXaTDs

PROBLEM: rPOnZfGIkoLvX, wAOnZfGINrxrT

SOLUTION:
OnZfGI