could niello
Verbo regular: niello - nielloed- nielloed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could niello
you could niello
he could niello
we could niello
you could niello
they could niello 	I could be nielloing
you could be nielloing
he could be nielloing
we could be nielloing
you could be nielloing
they could be nielloing	I could have nielloed
you could have nielloed
he could have nielloed
we could have nielloed
you could have nielloed
they could have nielloed	I could have been nielloing
you could have been nielloing
he could have been nielloing
we could have been nielloing
you could have been nielloing
they could have been nielloing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not niello
you could not niello
he could not niello
we could not niello
you could not niello
they could not niello 	I could not be nielloing
you could not be nielloing
he could not be nielloing
we could not be nielloing
you could not be nielloing
they could not be nielloing	I could not have nielloed
you could not have nielloed
he could not have nielloed
we could not have nielloed
you could not have nielloed
they could not have nielloed	I could not have been nielloing
you could not have been nielloing
he could not have been nielloing
we could not have been nielloing
you could not have been nielloing
they could not have been nielloing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I niello?
could you niello?
could he niello?
could we niello?
could you niello?
could they niello? 	could I be nielloing?
could you be nielloing?
could he be nielloing?
could we be nielloing?
could you be nielloing?
could they be nielloing? 	could I have nielloed?
could you have nielloed?
could he have nielloed?
could we have nielloed?
could you have nielloed?
could they have nielloed? 	could I have been nielloing?
could you have been nielloing?
could he have been nielloing?
could we have been nielloing?
could you have been nielloing?
could they have been nielloing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not niello?
could you not niello?
could he not niello?
could we not niello?
could you not niello?
could they not niello? 	could I not be nielloing?
could you not be nielloing?
could he not be nielloing?
could we not be nielloing?
could you not be nielloing?
could they not be nielloing? 	could I not have nielloed?
could you not have nielloed?
could he not have nielloed?
could we not have nielloed?
could you not have nielloed?
could they not have nielloed? 	could I not have been nielloing?
could you not have been nielloing?
could he not have been nielloing?
could we not have been nielloing?
could you not have been nielloing?
could they not have been nielloing?