can buff
Verbo regular: buff - buffed- buffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can buff
you can buff
she can buff
we can buff
you can buff
they can buff 	I can be buffing
you can be buffing
she can be buffing
we can be buffing
you can be buffing
they can be buffing	I can have buffed
you can have buffed
she can have buffed
we can have buffed
you can have buffed
they can have buffed	I can have been buffing
you can have been buffing
she can have been buffing
we can have been buffing
you can have been buffing
they can have been buffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot buff
you cannot buff
she cannot buff
we cannot buff
you cannot buff
they cannot buff 	I cannot be buffing
you cannot be buffing
she cannot be buffing
we cannot be buffing
you cannot be buffing
they cannot be buffing	I cannot have buffed
you cannot have buffed
she cannot have buffed
we cannot have buffed
you cannot have buffed
they cannot have buffed	I cannot have been buffing
you cannot have been buffing
she cannot have been buffing
we cannot have been buffing
you cannot have been buffing
they cannot have been buffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I buff?
can you buff?
can she buff?
can we buff?
can you buff?
can they buff? 	can I be buffing?
can you be buffing?
can she be buffing?
can we be buffing?
can you be buffing?
can they be buffing? 	can I have buffed?
can you have buffed?
can she have buffed?
can we have buffed?
can you have buffed?
can they have buffed? 	can I have been buffing?
can you have been buffing?
can she have been buffing?
can we have been buffing?
can you have been buffing?
can they have been buffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not buff?
can you not buff?
can she not buff?
can we not buff?
can you not buff?
can they not buff? 	can I not be buffing?
can you not be buffing?
can she not be buffing?
can we not be buffing?
can you not be buffing?
can they not be buffing? 	can I not have buffed?
can you not have buffed?
can she not have buffed?
can we not have buffed?
can you not have buffed?
can they not have buffed? 	can I not have been buffing?
can you not have been buffing?
can she not have been buffing?
can we not have been buffing?
can you not have been buffing?
can they not have been buffing?