could scarf
Verbo regular: scarf - scarfed- scarfed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could scarf
you could scarf
he could scarf
we could scarf
you could scarf
they could scarf 	I could be scarfing
you could be scarfing
he could be scarfing
we could be scarfing
you could be scarfing
they could be scarfing	I could have scarfed
you could have scarfed
he could have scarfed
we could have scarfed
you could have scarfed
they could have scarfed	I could have been scarfing
you could have been scarfing
he could have been scarfing
we could have been scarfing
you could have been scarfing
they could have been scarfing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not scarf
you could not scarf
he could not scarf
we could not scarf
you could not scarf
they could not scarf 	I could not be scarfing
you could not be scarfing
he could not be scarfing
we could not be scarfing
you could not be scarfing
they could not be scarfing	I could not have scarfed
you could not have scarfed
he could not have scarfed
we could not have scarfed
you could not have scarfed
they could not have scarfed	I could not have been scarfing
you could not have been scarfing
he could not have been scarfing
we could not have been scarfing
you could not have been scarfing
they could not have been scarfing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I scarf?
could you scarf?
could he scarf?
could we scarf?
could you scarf?
could they scarf? 	could I be scarfing?
could you be scarfing?
could he be scarfing?
could we be scarfing?
could you be scarfing?
could they be scarfing? 	could I have scarfed?
could you have scarfed?
could he have scarfed?
could we have scarfed?
could you have scarfed?
could they have scarfed? 	could I have been scarfing?
could you have been scarfing?
could he have been scarfing?
could we have been scarfing?
could you have been scarfing?
could they have been scarfing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not scarf?
could you not scarf?
could he not scarf?
could we not scarf?
could you not scarf?
could they not scarf? 	could I not be scarfing?
could you not be scarfing?
could he not be scarfing?
could we not be scarfing?
could you not be scarfing?
could they not be scarfing? 	could I not have scarfed?
could you not have scarfed?
could he not have scarfed?
could we not have scarfed?
could you not have scarfed?
could they not have scarfed? 	could I not have been scarfing?
could you not have been scarfing?
could he not have been scarfing?
could we not have been scarfing?
could you not have been scarfing?
could they not have been scarfing?