could clutter
Verbo regular: clutter - cluttered- cluttered

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