English verb conjugation
MUST CONFIRM

Regular verb: confirm - confirmed - confirmed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Negation

Simple form	V-ing form
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
Perfect	V-ing perfect
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

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?

Interro-negative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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?