must proffer
Verbo regolare: proffer - proffered- proffered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must proffer
you must proffer
he must proffer
we must proffer
you must proffer
they must proffer 	I must be proffering
you must be proffering
he must be proffering
we must be proffering
you must be proffering
they must be proffering	I must have proffered
you must have proffered
he must have proffered
we must have proffered
you must have proffered
they must have proffered	I must have been proffering
you must have been proffering
he must have been proffering
we must have been proffering
you must have been proffering
they must have been proffering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't proffer
you mustn't proffer
he mustn't proffer
we mustn't proffer
you mustn't proffer
they mustn't proffer 	I mustn't be proffering
you mustn't be proffering
he mustn't be proffering
we mustn't be proffering
you mustn't be proffering
they mustn't be proffering	I mustn't have proffered
you mustn't have proffered
he mustn't have proffered
we mustn't have proffered
you mustn't have proffered
they mustn't have proffered	I mustn't have been proffering
you mustn't have been proffering
he mustn't have been proffering
we mustn't have been proffering
you mustn't have been proffering
they mustn't have been proffering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I proffer?
must you proffer?
must he proffer?
must we proffer?
must you proffer?
must they proffer? 	must I be proffering?
must you be proffering?
must he be proffering?
must we be proffering?
must you be proffering?
must they be proffering? 	must I have proffered?
must you have proffered?
must he have proffered?
must we have proffered?
must you have proffered?
must they have proffered? 	must I have been proffering?
must you have been proffering?
must he have been proffering?
must we have been proffering?
must you have been proffering?
must they have been proffering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I proffer?
mustn't you proffer?
mustn't he proffer?
mustn't we proffer?
mustn't you proffer?
mustn't they proffer? 	mustn't I be proffering?
mustn't you be proffering?
mustn't he be proffering?
mustn't we be proffering?
mustn't you be proffering?
mustn't they be proffering? 	mustn't I have proffered?
mustn't you have proffered?
mustn't he have proffered?
mustn't we have proffered?
mustn't you have proffered?
mustn't they have proffered? 	mustn't I have been proffering?
mustn't you have been proffering?
mustn't he have been proffering?
mustn't we have been proffering?
mustn't you have been proffering?
mustn't they have been proffering?