should niche
Regular verb: niche - niched- niched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd niche
you'd niche
he'd niche
we'd niche
you'd niche
they'd niche 	I'd be niching
you'd be niching
he'd be niching
we'd be niching
you'd be niching
they'd be niching	I should've niched
you should've niched
he should've niched
we should've niched
you should've niched
they should've niched	I should've been niching
you should've been niching
he should've been niching
we should've been niching
you should've been niching
they should've been niching	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I niche?
should you niche?
should he niche?
should we niche?
should you niche?
should they niche? 	should I be niching?
should you be niching?
should he be niching?
should we be niching?
should you be niching?
should they be niching? 	should I have niched?
should you have niched?
should he have niched?
should we have niched?
should you have niched?
should they have niched? 	should I have been niching?
should you have been niching?
should he have been niching?
should we have been niching?
should you have been niching?
should they have been niching? 	

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