should circumstantiate
Regular verb: circumstantiate - circumstantiated- circumstantiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd circumstantiate
you'd circumstantiate
he'd circumstantiate
we'd circumstantiate
you'd circumstantiate
they'd circumstantiate 	I'd be circumstantiating
you'd be circumstantiating
he'd be circumstantiating
we'd be circumstantiating
you'd be circumstantiating
they'd be circumstantiating	I should've circumstantiated
you should've circumstantiated
he should've circumstantiated
we should've circumstantiated
you should've circumstantiated
they should've circumstantiated	I should've been circumstantiating
you should've been circumstantiating
he should've been circumstantiating
we should've been circumstantiating
you should've been circumstantiating
they should've been circumstantiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't circumstantiate
you shouldn't circumstantiate
he shouldn't circumstantiate
we shouldn't circumstantiate
you shouldn't circumstantiate
they shouldn't circumstantiate 	I shouldn't be circumstantiating
you shouldn't be circumstantiating
he shouldn't be circumstantiating
we shouldn't be circumstantiating
you shouldn't be circumstantiating
they shouldn't be circumstantiating	I shouldn't have circumstantiated
you shouldn't have circumstantiated
he shouldn't have circumstantiated
we shouldn't have circumstantiated
you shouldn't have circumstantiated
they shouldn't have circumstantiated	I shouldn't have been circumstantiating
you shouldn't have been circumstantiating
he shouldn't have been circumstantiating
we shouldn't have been circumstantiating
you shouldn't have been circumstantiating
they shouldn't have been circumstantiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I circumstantiate?
should you circumstantiate?
should he circumstantiate?
should we circumstantiate?
should you circumstantiate?
should they circumstantiate? 	should I be circumstantiating?
should you be circumstantiating?
should he be circumstantiating?
should we be circumstantiating?
should you be circumstantiating?
should they be circumstantiating? 	should I have circumstantiated?
should you have circumstantiated?
should he have circumstantiated?
should we have circumstantiated?
should you have circumstantiated?
should they have circumstantiated? 	should I have been circumstantiating?
should you have been circumstantiating?
should he have been circumstantiating?
should we have been circumstantiating?
should you have been circumstantiating?
should they have been circumstantiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I circumstantiate?
shouldn't you circumstantiate?
shouldn't he circumstantiate?
shouldn't we circumstantiate?
shouldn't you circumstantiate?
shouldn't they circumstantiate? 	shouldn't I be circumstantiating?
shouldn't you be circumstantiating?
shouldn't he be circumstantiating?
shouldn't we be circumstantiating?
shouldn't you be circumstantiating?
shouldn't they be circumstantiating? 	shouldn't I have circumstantiated?
shouldn't you have circumstantiated?
shouldn't he have circumstantiated?
shouldn't we have circumstantiated?
shouldn't you have circumstantiated?
shouldn't they have circumstantiated? 	shouldn't I have been circumstantiating?
shouldn't you have been circumstantiating?
shouldn't he have been circumstantiating?
shouldn't we have been circumstantiating?
shouldn't you have been circumstantiating?
shouldn't they have been circumstantiating?