can circumstantiate
Regular verb: circumstantiate - circumstantiated- circumstantiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can circumstantiate
you can circumstantiate
he can circumstantiate
we can circumstantiate
you can circumstantiate
they can circumstantiate 	I can be circumstantiating
you can be circumstantiating
he can be circumstantiating
we can be circumstantiating
you can be circumstantiating
they can be circumstantiating	I can have circumstantiated
you can have circumstantiated
he can have circumstantiated
we can have circumstantiated
you can have circumstantiated
they can have circumstantiated	I can have been circumstantiating
you can have been circumstantiating
he can have been circumstantiating
we can have been circumstantiating
you can have been circumstantiating
they can have been circumstantiating	

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

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

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