must circumstantiate
Verbo regular: circumstantiate - circumstantiated- circumstantiated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must circumstantiate
you must circumstantiate
he must circumstantiate
we must circumstantiate
you must circumstantiate
they must circumstantiate 	I must be circumstantiating
you must be circumstantiating
he must be circumstantiating
we must be circumstantiating
you must be circumstantiating
they must be circumstantiating	I must have circumstantiated
you must have circumstantiated
he must have circumstantiated
we must have circumstantiated
you must have circumstantiated
they must have circumstantiated	I must have been circumstantiating
you must have been circumstantiating
he must have been circumstantiating
we must have been circumstantiating
you must have been circumstantiating
they must have been circumstantiating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't circumstantiate
you mustn't circumstantiate
he mustn't circumstantiate
we mustn't circumstantiate
you mustn't circumstantiate
they mustn't circumstantiate 	I mustn't be circumstantiating
you mustn't be circumstantiating
he mustn't be circumstantiating
we mustn't be circumstantiating
you mustn't be circumstantiating
they mustn't be circumstantiating	I mustn't have circumstantiated
you mustn't have circumstantiated
he mustn't have circumstantiated
we mustn't have circumstantiated
you mustn't have circumstantiated
they mustn't have circumstantiated	I mustn't have been circumstantiating
you mustn't have been circumstantiating
he mustn't have been circumstantiating
we mustn't have been circumstantiating
you mustn't have been circumstantiating
they mustn't have been circumstantiating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I circumstantiate?
must you circumstantiate?
must he circumstantiate?
must we circumstantiate?
must you circumstantiate?
must they circumstantiate? 	must I be circumstantiating?
must you be circumstantiating?
must he be circumstantiating?
must we be circumstantiating?
must you be circumstantiating?
must they be circumstantiating? 	must I have circumstantiated?
must you have circumstantiated?
must he have circumstantiated?
must we have circumstantiated?
must you have circumstantiated?
must they have circumstantiated? 	must I have been circumstantiating?
must you have been circumstantiating?
must he have been circumstantiating?
must we have been circumstantiating?
must you have been circumstantiating?
must they have been circumstantiating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I circumstantiate?
mustn't you circumstantiate?
mustn't he circumstantiate?
mustn't we circumstantiate?
mustn't you circumstantiate?
mustn't they circumstantiate? 	mustn't I be circumstantiating?
mustn't you be circumstantiating?
mustn't he be circumstantiating?
mustn't we be circumstantiating?
mustn't you be circumstantiating?
mustn't they be circumstantiating? 	mustn't I have circumstantiated?
mustn't you have circumstantiated?
mustn't he have circumstantiated?
mustn't we have circumstantiated?
mustn't you have circumstantiated?
mustn't they have circumstantiated? 	mustn't I have been circumstantiating?
mustn't you have been circumstantiating?
mustn't he have been circumstantiating?
mustn't we have been circumstantiating?
mustn't you have been circumstantiating?
mustn't they have been circumstantiating?