I could stammer you could stammer she could stammer we could stammer you could stammer they could stammer
Forma com V-ing
I could be stammering you could be stammering she could be stammering we could be stammering you could be stammering they could be stammering
Perfeito
I could have stammered you could have stammered she could have stammered we could have stammered you could have stammered they could have stammered
Perfeito com V-ing
I could have been stammering you could have been stammering she could have been stammering we could have been stammering you could have been stammering they could have been stammering
Negação
Forma simple
I could not stammer you could not stammer she could not stammer we could not stammer you could not stammer they could not stammer
Forma com V-ing
I could not be stammering you could not be stammering she could not be stammering we could not be stammering you could not be stammering they could not be stammering
Perfeito
I could not have stammered you could not have stammered she could not have stammered we could not have stammered you could not have stammered they could not have stammered
Perfeito com V-ing
I could not have been stammering you could not have been stammering she could not have been stammering we could not have been stammering you could not have been stammering they could not have been stammering
Forma interrogativa
Forma simple
could I stammer? could you stammer? could she stammer? could we stammer? could you stammer? could they stammer?
Forma com V-ing
could I be stammering? could you be stammering? could she be stammering? could we be stammering? could you be stammering? could they be stammering?
Perfeito
could I have stammered? could you have stammered? could she have stammered? could we have stammered? could you have stammered? could they have stammered?
Perfeito com V-ing
could I have been stammering? could you have been stammering? could she have been stammering? could we have been stammering? could you have been stammering? could they have been stammering?
Forma interro-Negação
Forma simple
could I not stammer? could you not stammer? could she not stammer? could we not stammer? could you not stammer? could they not stammer?
Forma com V-ing
could I not be stammering? could you not be stammering? could she not be stammering? could we not be stammering? could you not be stammering? could they not be stammering?
Perfeito
could I not have stammered? could you not have stammered? could she not have stammered? could we not have stammered? could you not have stammered? could they not have stammered?
Perfeito com V-ing
could I not have been stammering? could you not have been stammering? could she not have been stammering? could we not have been stammering? could you not have been stammering? could they not have been stammering?