must utter
Verbo regular: utter - uttered- uttered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must utter
you must utter
he must utter
we must utter
you must utter
they must utter 	I must be uttering
you must be uttering
he must be uttering
we must be uttering
you must be uttering
they must be uttering	I must have uttered
you must have uttered
he must have uttered
we must have uttered
you must have uttered
they must have uttered	I must have been uttering
you must have been uttering
he must have been uttering
we must have been uttering
you must have been uttering
they must have been uttering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't utter
you mustn't utter
he mustn't utter
we mustn't utter
you mustn't utter
they mustn't utter 	I mustn't be uttering
you mustn't be uttering
he mustn't be uttering
we mustn't be uttering
you mustn't be uttering
they mustn't be uttering	I mustn't have uttered
you mustn't have uttered
he mustn't have uttered
we mustn't have uttered
you mustn't have uttered
they mustn't have uttered	I mustn't have been uttering
you mustn't have been uttering
he mustn't have been uttering
we mustn't have been uttering
you mustn't have been uttering
they mustn't have been uttering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I utter?
must you utter?
must he utter?
must we utter?
must you utter?
must they utter? 	must I be uttering?
must you be uttering?
must he be uttering?
must we be uttering?
must you be uttering?
must they be uttering? 	must I have uttered?
must you have uttered?
must he have uttered?
must we have uttered?
must you have uttered?
must they have uttered? 	must I have been uttering?
must you have been uttering?
must he have been uttering?
must we have been uttering?
must you have been uttering?
must they have been uttering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I utter?
mustn't you utter?
mustn't he utter?
mustn't we utter?
mustn't you utter?
mustn't they utter? 	mustn't I be uttering?
mustn't you be uttering?
mustn't he be uttering?
mustn't we be uttering?
mustn't you be uttering?
mustn't they be uttering? 	mustn't I have uttered?
mustn't you have uttered?
mustn't he have uttered?
mustn't we have uttered?
mustn't you have uttered?
mustn't they have uttered? 	mustn't I have been uttering?
mustn't you have been uttering?
mustn't he have been uttering?
mustn't we have been uttering?
mustn't you have been uttering?
mustn't they have been uttering?