English verb conjugation
CAN BUZZ

Regular verb: buzz - buzzed - buzzed

Affirmation

Simple form	V-ing form
I can buzz you can buzz he can buzz we can buzz you can buzz they can buzz	I can be buzzing you can be buzzing he can be buzzing we can be buzzing you can be buzzing they can be buzzing
Perfect	V-ing perfect
I can have buzzed you can have buzzed he can have buzzed we can have buzzed you can have buzzed they can have buzzed	I can have been buzzing you can have been buzzing he can have been buzzing we can have been buzzing you can have been buzzing they can have been buzzing

Negation

Simple form	V-ing form
I can't buzz you can't buzz he can't buzz we can't buzz you can't buzz they can't buzz	I can't be buzzing you can't be buzzing he can't be buzzing we can't be buzzing you can't be buzzing they can't be buzzing
Perfect	V-ing perfect
I can't have buzzed you can't have buzzed he can't have buzzed we can't have buzzed you can't have buzzed they can't have buzzed	I can't have been buzzing you can't have been buzzing he can't have been buzzing we can't have been buzzing you can't have been buzzing they can't have been buzzing

Interrogative form

Simple form	V-ing form
can I buzz? can you buzz? can he buzz? can we buzz? can you buzz? can they buzz?	can I be buzzing? can you be buzzing? can he be buzzing? can we be buzzing? can you be buzzing? can they be buzzing?
Perfect	V-ing perfect
can I have buzzed? can you have buzzed? can he have buzzed? can we have buzzed? can you have buzzed? can they have buzzed?	can I have been buzzing? can you have been buzzing? can he have been buzzing? can we have been buzzing? can you have been buzzing? can they have been buzzing?

Interro-negative form

Simple form	V-ing form
can't I buzz? can't you buzz? can't he buzz? can't we buzz? can't you buzz? can't they buzz?	can't I be buzzing? can't you be buzzing? can't he be buzzing? can't we be buzzing? can't you be buzzing? can't they be buzzing?
Perfect	V-ing perfect
can't I have buzzed? can't you have buzzed? can't he have buzzed? can't we have buzzed? can't you have buzzed? can't they have buzzed?	can't I have been buzzing? can't you have been buzzing? can't he have been buzzing? can't we have been buzzing? can't you have been buzzing? can't they have been buzzing?