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 must not defog you must not defog he must not defog we must not defog you must not defog they must not defog	I must not be defoging you must not be defoging he must not be defoging we must not be defoging you must not be defoging they must not be defoging
Perfect	V-ing perfect
I must not have defoged you must not have defoged he must not have defoged we must not have defoged you must not have defoged they must not have defoged	I must not have been defoging you must not have been defoging he must not have been defoging we must not have been defoging you must not have been defoging they must not 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
must I not defog? must you not defog? must he not defog? must we not defog? must you not defog? must they not defog?	must I not be defoging? must you not be defoging? must he not be defoging? must we not be defoging? must you not be defoging? must they not be defoging?
Perfect	V-ing perfect
must I not have defoged? must you not have defoged? must he not have defoged? must we not have defoged? must you not have defoged? must they not have defoged?	must I not have been defoging? must you not have been defoging? must he not have been defoging? must we not have been defoging? must you not have been defoging? must they not have been defoging?