must confirm
Verbo regular: confirm - confirmed- confirmed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must confirm
you must confirm
she must confirm
we must confirm
you must confirm
they must confirm 	I must be confirming
you must be confirming
she must be confirming
we must be confirming
you must be confirming
they must be confirming	I must have confirmed
you must have confirmed
she must have confirmed
we must have confirmed
you must have confirmed
they must have confirmed	I must have been confirming
you must have been confirming
she must have been confirming
we must have been confirming
you must have been confirming
they must have been confirming	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't confirm
you mustn't confirm
she mustn't confirm
we mustn't confirm
you mustn't confirm
they mustn't confirm 	I mustn't be confirming
you mustn't be confirming
she mustn't be confirming
we mustn't be confirming
you mustn't be confirming
they mustn't be confirming	I mustn't have confirmed
you mustn't have confirmed
she mustn't have confirmed
we mustn't have confirmed
you mustn't have confirmed
they mustn't have confirmed	I mustn't have been confirming
you mustn't have been confirming
she mustn't have been confirming
we mustn't have been confirming
you mustn't have been confirming
they mustn't have been confirming	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I confirm?
must you confirm?
must she confirm?
must we confirm?
must you confirm?
must they confirm? 	must I be confirming?
must you be confirming?
must she be confirming?
must we be confirming?
must you be confirming?
must they be confirming? 	must I have confirmed?
must you have confirmed?
must she have confirmed?
must we have confirmed?
must you have confirmed?
must they have confirmed? 	must I have been confirming?
must you have been confirming?
must she have been confirming?
must we have been confirming?
must you have been confirming?
must they have been confirming? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I confirm?
mustn't you confirm?
mustn't she confirm?
mustn't we confirm?
mustn't you confirm?
mustn't they confirm? 	mustn't I be confirming?
mustn't you be confirming?
mustn't she be confirming?
mustn't we be confirming?
mustn't you be confirming?
mustn't they be confirming? 	mustn't I have confirmed?
mustn't you have confirmed?
mustn't she have confirmed?
mustn't we have confirmed?
mustn't you have confirmed?
mustn't they have confirmed? 	mustn't I have been confirming?
mustn't you have been confirming?
mustn't she have been confirming?
mustn't we have been confirming?
mustn't you have been confirming?
mustn't they have been confirming?