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

SOLUTION: EeiWGONm

PROBLEM: BdqUloJanutXoOyfLsuA, NRDloJanutXoOQY

SOLUTION: loJanutXoO

PROBLEM: RkwJdrUIeZNNpwnjQozcwz, FBxzSjSNNpwnjQozccKHcLzNfXn

SOLUTION:
NNpwnjQozc