English verb conjugation
MUST DEFOG

Regular verb: defog - defoged - defoged

Affirmation

Simple form	V-ing form
I must defog you must defog he must defog we must defog you must defog they must defog	I must be defoging you must be defoging he must be defoging we must be defoging you must be defoging they must be defoging
Perfect	V-ing perfect
I must have defoged you must have defoged he must have defoged we must have defoged you must have defoged they must have defoged	I must have been defoging you must have been defoging he must have been defoging we must have been defoging you must have been defoging they must have been defoging

Negation

Simple form	V-ing form
I mustn't defog you mustn't defog he mustn't defog we mustn't defog you mustn't defog they mustn't defog	I mustn't be defoging you mustn't be defoging he mustn't be defoging we mustn't be defoging you mustn't be defoging they mustn't be defoging
Perfect	V-ing perfect
I mustn't have defoged you mustn't have defoged he mustn't have defoged we mustn't have defoged you mustn't have defoged they mustn't have defoged	I mustn't have been defoging you mustn't have been defoging he mustn't have been defoging we mustn't have been defoging you mustn't have been defoging they mustn't have been defoging

Interrogative form

Simple form	V-ing form
must I defog? must you defog? must he defog? must we defog? must you defog? must they defog?	must I be defoging? must you be defoging? must he be defoging? must we be defoging? must you be defoging? must they be defoging?
Perfect	V-ing perfect
must I have defoged? must you have defoged? must he have defoged? must we have defoged? must you have defoged? must they have defoged?	must I have been defoging? must you have been defoging? must he have been defoging? must we have been defoging? must you have been defoging? must they have been defoging?

Interro-negative form

Simple form	V-ing form
mustn't I defog? mustn't you defog? mustn't he defog? mustn't we defog? mustn't you defog? mustn't they defog?	mustn't I be defoging? mustn't you be defoging? mustn't he be defoging? mustn't we be defoging? mustn't you be defoging? mustn't they be defoging?
Perfect	V-ing perfect
mustn't I have defoged? mustn't you have defoged? mustn't he have defoged? mustn't we have defoged? mustn't you have defoged? mustn't they have defoged?	mustn't I have been defoging? mustn't you have been defoging? mustn't he have been defoging? mustn't we have been defoging? mustn't you have been defoging? mustn't they have been defoging?