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

SOLUTION: mMoVB

PROBLEM: aeQjEeiWGONmzGimhGiw, RIEeiWGONmOZuVYr

SOLUTION: EeiWGONm

PROBLEM: yTpiIdSjQIrR, dSIdSjQmqHD

SOLUTION:
IdSjQ