could niche
Regular verb: niche - niched- niched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't niche
you couldn't niche
he couldn't niche
we couldn't niche
you couldn't niche
they couldn't niche 	I couldn't be niching
you couldn't be niching
he couldn't be niching
we couldn't be niching
you couldn't be niching
they couldn't be niching	I couldn't have niched
you couldn't have niched
he couldn't have niched
we couldn't have niched
you couldn't have niched
they couldn't have niched	I couldn't have been niching
you couldn't have been niching
he couldn't have been niching
we couldn't have been niching
you couldn't have been niching
they couldn't have been niching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I niche?
couldn't you niche?
couldn't he niche?
couldn't we niche?
couldn't you niche?
couldn't they niche? 	couldn't I be niching?
couldn't you be niching?
couldn't he be niching?
couldn't we be niching?
couldn't you be niching?
couldn't they be niching? 	couldn't I have niched?
couldn't you have niched?
couldn't he have niched?
couldn't we have niched?
couldn't you have niched?
couldn't they have niched? 	couldn't I have been niching?
couldn't you have been niching?
couldn't he have been niching?
couldn't we have been niching?
couldn't you have been niching?
couldn't they have been niching?