English verb conjugation
CAN BEEF

Regular verb: beef - beefed - beefed

Affirmation

Simple form	V-ing form
I can beef you can beef he can beef we can beef you can beef they can beef	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	V-ing 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	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	V-ing form
I cannot beef you cannot beef he cannot beef we cannot beef you cannot beef they cannot beef	I cannot be beefing you cannot be beefing he cannot be beefing we cannot be beefing you cannot be beefing they cannot be beefing
Perfect	V-ing perfect
I cannot have beefed you cannot have beefed he cannot have beefed we cannot have beefed you cannot have beefed they cannot have beefed	I cannot have been beefing you cannot have been beefing he cannot have been beefing we cannot have been beefing you cannot have been beefing they cannot have been beefing

Interrogative form

Simple form	V-ing form
can I beef? can you beef? can he beef? can we beef? can you beef? can they beef?	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	V-ing 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?	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	V-ing form
can I not beef? can you not beef? can he not beef? can we not beef? can you not beef? can they not beef?	can I not be beefing? can you not be beefing? can he not be beefing? can we not be beefing? can you not be beefing? can they not be beefing?
Perfect	V-ing perfect
can I not have beefed? can you not have beefed? can he not have beefed? can we not have beefed? can you not have beefed? can they not have beefed?	can I not have been beefing? can you not have been beefing? can he not have been beefing? can we not have been beefing? can you not have been beefing? can they not have been beefing?