could niche
Verbo regular: niche - niched- niched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could niche
you could niche
he could niche
we could niche
you could niche
they could niche 	I could be niching
you could be niching
he could be niching
we could be niching
you could be niching
they could be niching	I could have niched
you could have niched
he could have niched
we could have niched
you could have niched
they could have niched	I could have been niching
you could have been niching
he could have been niching
we could have been niching
you could have been niching
they could have been niching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not niche
you could not niche
he could not niche
we could not niche
you could not niche
they could not niche 	I could not be niching
you could not be niching
he could not be niching
we could not be niching
you could not be niching
they could not be niching	I could not have niched
you could not have niched
he could not have niched
we could not have niched
you could not have niched
they could not have niched	I could not have been niching
you could not have been niching
he could not have been niching
we could not have been niching
you could not have been niching
they could not have been niching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I niche?
could you niche?
could he niche?
could we niche?
could you niche?
could they niche? 	could I be niching?
could you be niching?
could he be niching?
could we be niching?
could you be niching?
could they be niching? 	could I have niched?
could you have niched?
could he have niched?
could we have niched?
could you have niched?
could they have niched? 	could I have been niching?
could you have been niching?
could he have been niching?
could we have been niching?
could you have been niching?
could they have been niching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not niche?
could you not niche?
could he not niche?
could we not niche?
could you not niche?
could they not niche? 	could I not be niching?
could you not be niching?
could he not be niching?
could we not be niching?
could you not be niching?
could they not be niching? 	could I not have niched?
could you not have niched?
could he not have niched?
could we not have niched?
could you not have niched?
could they not have niched? 	could I not have been niching?
could you not have been niching?
could he not have been niching?
could we not have been niching?
could you not have been niching?
could they not have been niching?