English verb conjugation
MUST CONTUSE

Regular verb: contuse - contused - contused

Affirmation

Simple form	V-ing form
I must contuse you must contuse she must contuse we must contuse you must contuse they must contuse	I must be contusing you must be contusing she must be contusing we must be contusing you must be contusing they must be contusing
Perfect	V-ing perfect
I must have contused you must have contused she must have contused we must have contused you must have contused they must have contused	I must have been contusing you must have been contusing she must have been contusing we must have been contusing you must have been contusing they must have been contusing

Negation

Simple form	V-ing form
I mustn't contuse you mustn't contuse she mustn't contuse we mustn't contuse you mustn't contuse they mustn't contuse	I mustn't be contusing you mustn't be contusing she mustn't be contusing we mustn't be contusing you mustn't be contusing they mustn't be contusing
Perfect	V-ing perfect
I mustn't have contused you mustn't have contused she mustn't have contused we mustn't have contused you mustn't have contused they mustn't have contused	I mustn't have been contusing you mustn't have been contusing she mustn't have been contusing we mustn't have been contusing you mustn't have been contusing they mustn't have been contusing

Interrogative form

Simple form	V-ing form
must I contuse? must you contuse? must she contuse? must we contuse? must you contuse? must they contuse?	must I be contusing? must you be contusing? must she be contusing? must we be contusing? must you be contusing? must they be contusing?
Perfect	V-ing perfect
must I have contused? must you have contused? must she have contused? must we have contused? must you have contused? must they have contused?	must I have been contusing? must you have been contusing? must she have been contusing? must we have been contusing? must you have been contusing? must they have been contusing?

Interro-negative form

Simple form	V-ing form
mustn't I contuse? mustn't you contuse? mustn't she contuse? mustn't we contuse? mustn't you contuse? mustn't they contuse?	mustn't I be contusing? mustn't you be contusing? mustn't she be contusing? mustn't we be contusing? mustn't you be contusing? mustn't they be contusing?
Perfect	V-ing perfect
mustn't I have contused? mustn't you have contused? mustn't she have contused? mustn't we have contused? mustn't you have contused? mustn't they have contused?	mustn't I have been contusing? mustn't you have been contusing? mustn't she have been contusing? mustn't we have been contusing? mustn't you have been contusing? mustn't they have been contusing?