English verb conjugation
COULD NICHE

Regular verb: niche - niched - niched

Affirmation

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