I must affirm you must affirm he must affirm we must affirm you must affirm they must affirm
V-ing form
I must be affirming you must be affirming he must be affirming we must be affirming you must be affirming they must be affirming
Perfect
I must have affirmed you must have affirmed he must have affirmed we must have affirmed you must have affirmed they must have affirmed
V-ing perfect
I must have been affirming you must have been affirming he must have been affirming we must have been affirming you must have been affirming they must have been affirming
Negation
Simple form
I mustn't affirm you mustn't affirm he mustn't affirm we mustn't affirm you mustn't affirm they mustn't affirm
V-ing form
I mustn't be affirming you mustn't be affirming he mustn't be affirming we mustn't be affirming you mustn't be affirming they mustn't be affirming
Perfect
I mustn't have affirmed you mustn't have affirmed he mustn't have affirmed we mustn't have affirmed you mustn't have affirmed they mustn't have affirmed
V-ing perfect
I mustn't have been affirming you mustn't have been affirming he mustn't have been affirming we mustn't have been affirming you mustn't have been affirming they mustn't have been affirming
Interrogative form
Simple form
must I affirm? must you affirm? must he affirm? must we affirm? must you affirm? must they affirm?
V-ing form
must I be affirming? must you be affirming? must he be affirming? must we be affirming? must you be affirming? must they be affirming?
Perfect
must I have affirmed? must you have affirmed? must he have affirmed? must we have affirmed? must you have affirmed? must they have affirmed?
V-ing perfect
must I have been affirming? must you have been affirming? must he have been affirming? must we have been affirming? must you have been affirming? must they have been affirming?
Interro-negative form
Simple form
mustn't I affirm? mustn't you affirm? mustn't he affirm? mustn't we affirm? mustn't you affirm? mustn't they affirm?
V-ing form
mustn't I be affirming? mustn't you be affirming? mustn't he be affirming? mustn't we be affirming? mustn't you be affirming? mustn't they be affirming?
Perfect
mustn't I have affirmed? mustn't you have affirmed? mustn't he have affirmed? mustn't we have affirmed? mustn't you have affirmed? mustn't they have affirmed?
V-ing perfect
mustn't I have been affirming? mustn't you have been affirming? mustn't he have been affirming? mustn't we have been affirming? mustn't you have been affirming? mustn't they have been affirming?