English verb conjugation
MUST SMUDGE

Regular verb: smudge - smudged - smudged

Affirmation

Simple form	V-ing form
I must smudge you must smudge he must smudge we must smudge you must smudge they must smudge	I must be smudging you must be smudging he must be smudging we must be smudging you must be smudging they must be smudging
Perfect	V-ing perfect
I must have smudged you must have smudged he must have smudged we must have smudged you must have smudged they must have smudged	I must have been smudging you must have been smudging he must have been smudging we must have been smudging you must have been smudging they must have been smudging

Negation

Simple form	V-ing form
I mustn't smudge you mustn't smudge he mustn't smudge we mustn't smudge you mustn't smudge they mustn't smudge	I mustn't be smudging you mustn't be smudging he mustn't be smudging we mustn't be smudging you mustn't be smudging they mustn't be smudging
Perfect	V-ing perfect
I mustn't have smudged you mustn't have smudged he mustn't have smudged we mustn't have smudged you mustn't have smudged they mustn't have smudged	I mustn't have been smudging you mustn't have been smudging he mustn't have been smudging we mustn't have been smudging you mustn't have been smudging they mustn't have been smudging

Interrogative form

Simple form	V-ing form
must I smudge? must you smudge? must he smudge? must we smudge? must you smudge? must they smudge?	must I be smudging? must you be smudging? must he be smudging? must we be smudging? must you be smudging? must they be smudging?
Perfect	V-ing perfect
must I have smudged? must you have smudged? must he have smudged? must we have smudged? must you have smudged? must they have smudged?	must I have been smudging? must you have been smudging? must he have been smudging? must we have been smudging? must you have been smudging? must they have been smudging?

Interro-negative form

Simple form	V-ing form
mustn't I smudge? mustn't you smudge? mustn't he smudge? mustn't we smudge? mustn't you smudge? mustn't they smudge?	mustn't I be smudging? mustn't you be smudging? mustn't he be smudging? mustn't we be smudging? mustn't you be smudging? mustn't they be smudging?
Perfect	V-ing perfect
mustn't I have smudged? mustn't you have smudged? mustn't he have smudged? mustn't we have smudged? mustn't you have smudged? mustn't they have smudged?	mustn't I have been smudging? mustn't you have been smudging? mustn't he have been smudging? mustn't we have been smudging? mustn't you have been smudging? mustn't they have been smudging?