In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.

jgbXnQnrRF, GGjbXnQnUGu
bXnQn
In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.

jgbXnQnrRF, GGjbXnQnUGu
user
bXnQn
assistant
In this task, you are given two strings A, B. Find the longest common substring in the strings A and B.

jgbXnQnrRF, GGjbXnQnUGu
bXnQn