I could well you could well she could well we could well you could well they could well
Forma com V-ing
I could be welling you could be welling she could be welling we could be welling you could be welling they could be welling
Perfeito
I could have welled you could have welled she could have welled we could have welled you could have welled they could have welled
Perfeito com V-ing
I could have been welling you could have been welling she could have been welling we could have been welling you could have been welling they could have been welling
Negação
Forma simple
I could not well you could not well she could not well we could not well you could not well they could not well
Forma com V-ing
I could not be welling you could not be welling she could not be welling we could not be welling you could not be welling they could not be welling
Perfeito
I could not have welled you could not have welled she could not have welled we could not have welled you could not have welled they could not have welled
Perfeito com V-ing
I could not have been welling you could not have been welling she could not have been welling we could not have been welling you could not have been welling they could not have been welling
Forma interrogativa
Forma simple
could I well? could you well? could she well? could we well? could you well? could they well?
Forma com V-ing
could I be welling? could you be welling? could she be welling? could we be welling? could you be welling? could they be welling?
Perfeito
could I have welled? could you have welled? could she have welled? could we have welled? could you have welled? could they have welled?
Perfeito com V-ing
could I have been welling? could you have been welling? could she have been welling? could we have been welling? could you have been welling? could they have been welling?
Forma interro-Negação
Forma simple
could I not well? could you not well? could she not well? could we not well? could you not well? could they not well?
Forma com V-ing
could I not be welling? could you not be welling? could she not be welling? could we not be welling? could you not be welling? could they not be welling?
Perfeito
could I not have welled? could you not have welled? could she not have welled? could we not have welled? could you not have welled? could they not have welled?
Perfeito com V-ing
could I not have been welling? could you not have been welling? could she not have been welling? could we not have been welling? could you not have been welling? could they not have been welling?