could leather
Verbo regular: leather - leathered- leathered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't leather
you couldn't leather
he couldn't leather
we couldn't leather
you couldn't leather
they couldn't leather 	I couldn't be leathering
you couldn't be leathering
he couldn't be leathering
we couldn't be leathering
you couldn't be leathering
they couldn't be leathering	I couldn't have leathered
you couldn't have leathered
he couldn't have leathered
we couldn't have leathered
you couldn't have leathered
they couldn't have leathered	I couldn't have been leathering
you couldn't have been leathering
he couldn't have been leathering
we couldn't have been leathering
you couldn't have been leathering
they couldn't have been leathering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I leather?
couldn't you leather?
couldn't he leather?
couldn't we leather?
couldn't you leather?
couldn't they leather? 	couldn't I be leathering?
couldn't you be leathering?
couldn't he be leathering?
couldn't we be leathering?
couldn't you be leathering?
couldn't they be leathering? 	couldn't I have leathered?
couldn't you have leathered?
couldn't he have leathered?
couldn't we have leathered?
couldn't you have leathered?
couldn't they have leathered? 	couldn't I have been leathering?
couldn't you have been leathering?
couldn't he have been leathering?
couldn't we have been leathering?
couldn't you have been leathering?
couldn't they have been leathering?