I can beef you can beef he can beef we can beef you can beef they can beef
V-ing form
I can be beefing you can be beefing he can be beefing we can be beefing you can be beefing they can be beefing
Perfect
I can have beefed you can have beefed he can have beefed we can have beefed you can have beefed they can have beefed
V-ing perfect
I can have been beefing you can have been beefing he can have been beefing we can have been beefing you can have been beefing they can have been beefing
Negation
Simple form
I can't beef you can't beef he can't beef we can't beef you can't beef they can't beef
V-ing form
I can't be beefing you can't be beefing he can't be beefing we can't be beefing you can't be beefing they can't be beefing
Perfect
I can't have beefed you can't have beefed he can't have beefed we can't have beefed you can't have beefed they can't have beefed
V-ing perfect
I can't have been beefing you can't have been beefing he can't have been beefing we can't have been beefing you can't have been beefing they can't have been beefing
Interrogative form
Simple form
can I beef? can you beef? can he beef? can we beef? can you beef? can they beef?
V-ing form
can I be beefing? can you be beefing? can he be beefing? can we be beefing? can you be beefing? can they be beefing?
Perfect
can I have beefed? can you have beefed? can he have beefed? can we have beefed? can you have beefed? can they have beefed?
V-ing perfect
can I have been beefing? can you have been beefing? can he have been beefing? can we have been beefing? can you have been beefing? can they have been beefing?
Interro-negative form
Simple form
can't I beef? can't you beef? can't he beef? can't we beef? can't you beef? can't they beef?
V-ing form
can't I be beefing? can't you be beefing? can't he be beefing? can't we be beefing? can't you be beefing? can't they be beefing?
Perfect
can't I have beefed? can't you have beefed? can't he have beefed? can't we have beefed? can't you have beefed? can't they have beefed?
V-ing perfect
can't I have been beefing? can't you have been beefing? can't he have been beefing? can't we have been beefing? can't you have been beefing? can't they have been beefing?