could leather
Verbo regular: leather - leathered- leathered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could leather
you could leather
he could leather
we could leather
you could leather
they could leather 	I could be leathering
you could be leathering
he could be leathering
we could be leathering
you could be leathering
they could be leathering	I could have leathered
you could have leathered
he could have leathered
we could have leathered
you could have leathered
they could have leathered	I could have been leathering
you could have been leathering
he could have been leathering
we could have been leathering
you could have been leathering
they could have been leathering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not leather
you could not leather
he could not leather
we could not leather
you could not leather
they could not leather 	I could not be leathering
you could not be leathering
he could not be leathering
we could not be leathering
you could not be leathering
they could not be leathering	I could not have leathered
you could not have leathered
he could not have leathered
we could not have leathered
you could not have leathered
they could not have leathered	I could not have been leathering
you could not have been leathering
he could not have been leathering
we could not have been leathering
you could not have been leathering
they could not have been leathering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I leather?
could you leather?
could he leather?
could we leather?
could you leather?
could they leather? 	could I be leathering?
could you be leathering?
could he be leathering?
could we be leathering?
could you be leathering?
could they be leathering? 	could I have leathered?
could you have leathered?
could he have leathered?
could we have leathered?
could you have leathered?
could they have leathered? 	could I have been leathering?
could you have been leathering?
could he have been leathering?
could we have been leathering?
could you have been leathering?
could they have been leathering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not leather?
could you not leather?
could he not leather?
could we not leather?
could you not leather?
could they not leather? 	could I not be leathering?
could you not be leathering?
could he not be leathering?
could we not be leathering?
could you not be leathering?
could they not be leathering? 	could I not have leathered?
could you not have leathered?
could he not have leathered?
could we not have leathered?
could you not have leathered?
could they not have leathered? 	could I not have been leathering?
could you not have been leathering?
could he not have been leathering?
could we not have been leathering?
could you not have been leathering?
could they not have been leathering?