could woof
Verbo regular: woof - woofed- woofed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could woof
you could woof
he could woof
we could woof
you could woof
they could woof 	I could be woofing
you could be woofing
he could be woofing
we could be woofing
you could be woofing
they could be woofing	I could have woofed
you could have woofed
he could have woofed
we could have woofed
you could have woofed
they could have woofed	I could have been woofing
you could have been woofing
he could have been woofing
we could have been woofing
you could have been woofing
they could have been woofing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not woof
you could not woof
he could not woof
we could not woof
you could not woof
they could not woof 	I could not be woofing
you could not be woofing
he could not be woofing
we could not be woofing
you could not be woofing
they could not be woofing	I could not have woofed
you could not have woofed
he could not have woofed
we could not have woofed
you could not have woofed
they could not have woofed	I could not have been woofing
you could not have been woofing
he could not have been woofing
we could not have been woofing
you could not have been woofing
they could not have been woofing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I woof?
could you woof?
could he woof?
could we woof?
could you woof?
could they woof? 	could I be woofing?
could you be woofing?
could he be woofing?
could we be woofing?
could you be woofing?
could they be woofing? 	could I have woofed?
could you have woofed?
could he have woofed?
could we have woofed?
could you have woofed?
could they have woofed? 	could I have been woofing?
could you have been woofing?
could he have been woofing?
could we have been woofing?
could you have been woofing?
could they have been woofing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not woof?
could you not woof?
could he not woof?
could we not woof?
could you not woof?
could they not woof? 	could I not be woofing?
could you not be woofing?
could he not be woofing?
could we not be woofing?
could you not be woofing?
could they not be woofing? 	could I not have woofed?
could you not have woofed?
could he not have woofed?
could we not have woofed?
could you not have woofed?
could they not have woofed? 	could I not have been woofing?
could you not have been woofing?
could he not have been woofing?
could we not have been woofing?
could you not have been woofing?
could they not have been woofing?