English verb conjugation
MUST SUBJECT

Regular verb: subject - subjected - subjected

Affirmation

Simple form	V-ing form
I must subject you must subject she must subject we must subject you must subject they must subject	I must be subjecting you must be subjecting she must be subjecting we must be subjecting you must be subjecting they must be subjecting
Perfect	V-ing perfect
I must have subjected you must have subjected she must have subjected we must have subjected you must have subjected they must have subjected	I must have been subjecting you must have been subjecting she must have been subjecting we must have been subjecting you must have been subjecting they must have been subjecting

Negation

Simple form	V-ing form
I mustn't subject you mustn't subject she mustn't subject we mustn't subject you mustn't subject they mustn't subject	I mustn't be subjecting you mustn't be subjecting she mustn't be subjecting we mustn't be subjecting you mustn't be subjecting they mustn't be subjecting
Perfect	V-ing perfect
I mustn't have subjected you mustn't have subjected she mustn't have subjected we mustn't have subjected you mustn't have subjected they mustn't have subjected	I mustn't have been subjecting you mustn't have been subjecting she mustn't have been subjecting we mustn't have been subjecting you mustn't have been subjecting they mustn't have been subjecting

Interrogative form

Simple form	V-ing form
must I subject? must you subject? must she subject? must we subject? must you subject? must they subject?	must I be subjecting? must you be subjecting? must she be subjecting? must we be subjecting? must you be subjecting? must they be subjecting?
Perfect	V-ing perfect
must I have subjected? must you have subjected? must she have subjected? must we have subjected? must you have subjected? must they have subjected?	must I have been subjecting? must you have been subjecting? must she have been subjecting? must we have been subjecting? must you have been subjecting? must they have been subjecting?

Interro-negative form

Simple form	V-ing form
mustn't I subject? mustn't you subject? mustn't she subject? mustn't we subject? mustn't you subject? mustn't they subject?	mustn't I be subjecting? mustn't you be subjecting? mustn't she be subjecting? mustn't we be subjecting? mustn't you be subjecting? mustn't they be subjecting?
Perfect	V-ing perfect
mustn't I have subjected? mustn't you have subjected? mustn't she have subjected? mustn't we have subjected? mustn't you have subjected? mustn't they have subjected?	mustn't I have been subjecting? mustn't you have been subjecting? mustn't she have been subjecting? mustn't we have been subjecting? mustn't you have been subjecting? mustn't they have been subjecting?