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

SOLUTION: qoOpUtLDdT

PROBLEM: QjDQjzAIsnYgNmmetl, vyqDQjzAIsnNajYEheP

SOLUTION: DQjzAIsn

PROBLEM: WMniEjvhQsrTABFyTPNOaiyh, kUkqrTABFyTPNOCmIsgsbs

SOLUTION:
rTABFyTPNO