I could leather you could leather he could leather we could leather you could leather they could leather
Forma com V-ing
I could be leathering you could be leathering he could be leathering we could be leathering you could be leathering they could be leathering
Perfeito
I could have leathered you could have leathered he could have leathered we could have leathered you could have leathered they could have leathered
Perfeito com V-ing
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
I could not leather you could not leather he could not leather we could not leather you could not leather they could not leather
Forma com V-ing
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
Perfeito
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
Perfeito com V-ing
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
could I leather? could you leather? could he leather? could we leather? could you leather? could they leather?
Forma com V-ing
could I be leathering? could you be leathering? could he be leathering? could we be leathering? could you be leathering? could they be leathering?
Perfeito
could I have leathered? could you have leathered? could he have leathered? could we have leathered? could you have leathered? could they have leathered?
Perfeito com V-ing
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
could I not leather? could you not leather? could he not leather? could we not leather? could you not leather? could they not leather?
Forma com V-ing
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?
Perfeito
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?
Perfeito com V-ing
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?