English verb conjugation
MUST DEFUSE

Regular verb: defuse - defused - defused

Affirmation

Simple form	V-ing form
I must defuse you must defuse she must defuse we must defuse you must defuse they must defuse	I must be defusing you must be defusing she must be defusing we must be defusing you must be defusing they must be defusing
Perfect	V-ing perfect
I must have defused you must have defused she must have defused we must have defused you must have defused they must have defused	I must have been defusing you must have been defusing she must have been defusing we must have been defusing you must have been defusing they must have been defusing

Negation

Simple form	V-ing form
I mustn't defuse you mustn't defuse she mustn't defuse we mustn't defuse you mustn't defuse they mustn't defuse	I mustn't be defusing you mustn't be defusing she mustn't be defusing we mustn't be defusing you mustn't be defusing they mustn't be defusing
Perfect	V-ing perfect
I mustn't have defused you mustn't have defused she mustn't have defused we mustn't have defused you mustn't have defused they mustn't have defused	I mustn't have been defusing you mustn't have been defusing she mustn't have been defusing we mustn't have been defusing you mustn't have been defusing they mustn't have been defusing

Interrogative form

Simple form	V-ing form
must I defuse? must you defuse? must she defuse? must we defuse? must you defuse? must they defuse?	must I be defusing? must you be defusing? must she be defusing? must we be defusing? must you be defusing? must they be defusing?
Perfect	V-ing perfect
must I have defused? must you have defused? must she have defused? must we have defused? must you have defused? must they have defused?	must I have been defusing? must you have been defusing? must she have been defusing? must we have been defusing? must you have been defusing? must they have been defusing?

Interro-negative form

Simple form	V-ing form
mustn't I defuse? mustn't you defuse? mustn't she defuse? mustn't we defuse? mustn't you defuse? mustn't they defuse?	mustn't I be defusing? mustn't you be defusing? mustn't she be defusing? mustn't we be defusing? mustn't you be defusing? mustn't they be defusing?
Perfect	V-ing perfect
mustn't I have defused? mustn't you have defused? mustn't she have defused? mustn't we have defused? mustn't you have defused? mustn't they have defused?	mustn't I have been defusing? mustn't you have been defusing? mustn't she have been defusing? mustn't we have been defusing? mustn't you have been defusing? mustn't they have been defusing?