I could clutter you could clutter he could clutter we could clutter you could clutter they could clutter
Forma com V-ing
I could be cluttering you could be cluttering he could be cluttering we could be cluttering you could be cluttering they could be cluttering
Perfeito
I could have cluttered you could have cluttered he could have cluttered we could have cluttered you could have cluttered they could have cluttered
Perfeito com V-ing
I could have been cluttering you could have been cluttering he could have been cluttering we could have been cluttering you could have been cluttering they could have been cluttering
Negação
Forma simple
I could not clutter you could not clutter he could not clutter we could not clutter you could not clutter they could not clutter
Forma com V-ing
I could not be cluttering you could not be cluttering he could not be cluttering we could not be cluttering you could not be cluttering they could not be cluttering
Perfeito
I could not have cluttered you could not have cluttered he could not have cluttered we could not have cluttered you could not have cluttered they could not have cluttered
Perfeito com V-ing
I could not have been cluttering you could not have been cluttering he could not have been cluttering we could not have been cluttering you could not have been cluttering they could not have been cluttering
Forma interrogativa
Forma simple
could I clutter? could you clutter? could he clutter? could we clutter? could you clutter? could they clutter?
Forma com V-ing
could I be cluttering? could you be cluttering? could he be cluttering? could we be cluttering? could you be cluttering? could they be cluttering?
Perfeito
could I have cluttered? could you have cluttered? could he have cluttered? could we have cluttered? could you have cluttered? could they have cluttered?
Perfeito com V-ing
could I have been cluttering? could you have been cluttering? could he have been cluttering? could we have been cluttering? could you have been cluttering? could they have been cluttering?
Forma interro-Negação
Forma simple
could I not clutter? could you not clutter? could he not clutter? could we not clutter? could you not clutter? could they not clutter?
Forma com V-ing
could I not be cluttering? could you not be cluttering? could he not be cluttering? could we not be cluttering? could you not be cluttering? could they not be cluttering?
Perfeito
could I not have cluttered? could you not have cluttered? could he not have cluttered? could we not have cluttered? could you not have cluttered? could they not have cluttered?
Perfeito com V-ing
could I not have been cluttering? could you not have been cluttering? could he not have been cluttering? could we not have been cluttering? could you not have been cluttering? could they not have been cluttering?