English verb conjugation
MUST INITIAL

Regular verb: initial - initialed - initialed

Affirmation

Simple form	V-ing form
I must initial you must initial he must initial we must initial you must initial they must initial	I must be initialing you must be initialing he must be initialing we must be initialing you must be initialing they must be initialing
Perfect	V-ing perfect
I must have initialed you must have initialed he must have initialed we must have initialed you must have initialed they must have initialed	I must have been initialing you must have been initialing he must have been initialing we must have been initialing you must have been initialing they must have been initialing

Negation

Simple form	V-ing form
I mustn't initial you mustn't initial he mustn't initial we mustn't initial you mustn't initial they mustn't initial	I mustn't be initialing you mustn't be initialing he mustn't be initialing we mustn't be initialing you mustn't be initialing they mustn't be initialing
Perfect	V-ing perfect
I mustn't have initialed you mustn't have initialed he mustn't have initialed we mustn't have initialed you mustn't have initialed they mustn't have initialed	I mustn't have been initialing you mustn't have been initialing he mustn't have been initialing we mustn't have been initialing you mustn't have been initialing they mustn't have been initialing

Interrogative form

Simple form	V-ing form
must I initial? must you initial? must he initial? must we initial? must you initial? must they initial?	must I be initialing? must you be initialing? must he be initialing? must we be initialing? must you be initialing? must they be initialing?
Perfect	V-ing perfect
must I have initialed? must you have initialed? must he have initialed? must we have initialed? must you have initialed? must they have initialed?	must I have been initialing? must you have been initialing? must he have been initialing? must we have been initialing? must you have been initialing? must they have been initialing?

Interro-negative form

Simple form	V-ing form
mustn't I initial? mustn't you initial? mustn't he initial? mustn't we initial? mustn't you initial? mustn't they initial?	mustn't I be initialing? mustn't you be initialing? mustn't he be initialing? mustn't we be initialing? mustn't you be initialing? mustn't they be initialing?
Perfect	V-ing perfect
mustn't I have initialed? mustn't you have initialed? mustn't he have initialed? mustn't we have initialed? mustn't you have initialed? mustn't they have initialed?	mustn't I have been initialing? mustn't you have been initialing? mustn't he have been initialing? mustn't we have been initialing? mustn't you have been initialing? mustn't they have been initialing?