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

Q: HiGmCdXrmFRJYWLvZbpU, IxhkrmFRJYWLvZLaqRVxPkL

A: rmFRJYWLvZ
****
Q: EJZYVxgFxPoOSDlLfK, uTLTIETHZYVxgFxPoPwr

A: ZYVxgFxPo
****
Q: wjsvgahpkfeoOumi, EZIHAUgahpkflrSf

A:
gahpkf
****