In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
Q: GggtkuFqpWe, cPlRtkuFqpCSu
A: 
tkuFqp
In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
Q: GggtkuFqpWe, cPlRtkuFqpCSu
A: 
user
tkuFqp
assistant
In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.
Q: GggtkuFqpWe, cPlRtkuFqpCSu
A: 
tkuFqp