could fur
Verbo regular: fur - furred- furred

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could fur
you could fur
he could fur
we could fur
you could fur
they could fur 	I could be furring
you could be furring
he could be furring
we could be furring
you could be furring
they could be furring	I could have furred
you could have furred
he could have furred
we could have furred
you could have furred
they could have furred	I could have been furring
you could have been furring
he could have been furring
we could have been furring
you could have been furring
they could have been furring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not fur
you could not fur
he could not fur
we could not fur
you could not fur
they could not fur 	I could not be furring
you could not be furring
he could not be furring
we could not be furring
you could not be furring
they could not be furring	I could not have furred
you could not have furred
he could not have furred
we could not have furred
you could not have furred
they could not have furred	I could not have been furring
you could not have been furring
he could not have been furring
we could not have been furring
you could not have been furring
they could not have been furring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I fur?
could you fur?
could he fur?
could we fur?
could you fur?
could they fur? 	could I be furring?
could you be furring?
could he be furring?
could we be furring?
could you be furring?
could they be furring? 	could I have furred?
could you have furred?
could he have furred?
could we have furred?
could you have furred?
could they have furred? 	could I have been furring?
could you have been furring?
could he have been furring?
could we have been furring?
could you have been furring?
could they have been furring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not fur?
could you not fur?
could he not fur?
could we not fur?
could you not fur?
could they not fur? 	could I not be furring?
could you not be furring?
could he not be furring?
could we not be furring?
could you not be furring?
could they not be furring? 	could I not have furred?
could you not have furred?
could he not have furred?
could we not have furred?
could you not have furred?
could they not have furred? 	could I not have been furring?
could you not have been furring?
could he not have been furring?
could we not have been furring?
could you not have been furring?
could they not have been furring?