can buzz
Verbo regular: buzz - buzzed- buzzed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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	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	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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? 	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?