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

Q: ohueEOjHvAuoFVmMFft, ovdJPqOjHvAuoFVGbvxzlnE

A: OjHvAuoFV
****
Q: OVVkkdeHoFlyNROyCP, zFVUJbvkkdeHoFlysF

A: kkdeHoFly
****
Q: vpTFFEZE, ILTFFEHOMZ

A:
TFFE
****