could clatter
Verbo regular: clatter - clattered- clattered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could clatter
you could clatter
she could clatter
we could clatter
you could clatter
they could clatter 	I could be clattering
you could be clattering
she could be clattering
we could be clattering
you could be clattering
they could be clattering	I could have clattered
you could have clattered
she could have clattered
we could have clattered
you could have clattered
they could have clattered	I could have been clattering
you could have been clattering
she could have been clattering
we could have been clattering
you could have been clattering
they could have been clattering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not clatter
you could not clatter
she could not clatter
we could not clatter
you could not clatter
they could not clatter 	I could not be clattering
you could not be clattering
she could not be clattering
we could not be clattering
you could not be clattering
they could not be clattering	I could not have clattered
you could not have clattered
she could not have clattered
we could not have clattered
you could not have clattered
they could not have clattered	I could not have been clattering
you could not have been clattering
she could not have been clattering
we could not have been clattering
you could not have been clattering
they could not have been clattering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I clatter?
could you clatter?
could she clatter?
could we clatter?
could you clatter?
could they clatter? 	could I be clattering?
could you be clattering?
could she be clattering?
could we be clattering?
could you be clattering?
could they be clattering? 	could I have clattered?
could you have clattered?
could she have clattered?
could we have clattered?
could you have clattered?
could they have clattered? 	could I have been clattering?
could you have been clattering?
could she have been clattering?
could we have been clattering?
could you have been clattering?
could they have been clattering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not clatter?
could you not clatter?
could she not clatter?
could we not clatter?
could you not clatter?
could they not clatter? 	could I not be clattering?
could you not be clattering?
could she not be clattering?
could we not be clattering?
could you not be clattering?
could they not be clattering? 	could I not have clattered?
could you not have clattered?
could she not have clattered?
could we not have clattered?
could you not have clattered?
could they not have clattered? 	could I not have been clattering?
could you not have been clattering?
could she not have been clattering?
could we not have been clattering?
could you not have been clattering?
could they not have been clattering?