English verb conjugation
MUST CONTUSE

Regular verb: contuse - contused - contused

Affirmation

Simple form	V-ing form
I must contuse you must contuse he must contuse we must contuse you must contuse they must contuse	I must be contusing you must be contusing he 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 he 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 he 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 must not contuse you must not contuse he must not contuse we must not contuse you must not contuse they must not contuse	I must not be contusing you must not be contusing he must not be contusing we must not be contusing you must not be contusing they must not be contusing
Perfect	V-ing perfect
I must not have contused you must not have contused he must not have contused we must not have contused you must not have contused they must not have contused	I must not have been contusing you must not have been contusing he must not have been contusing we must not have been contusing you must not have been contusing they must not have been contusing

Interrogative form

Simple form	V-ing form
must I contuse? must you contuse? must he contuse? must we contuse? must you contuse? must they contuse?	must I be contusing? must you be contusing? must he 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 he 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 he 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
must I not contuse? must you not contuse? must he not contuse? must we not contuse? must you not contuse? must they not contuse?	must I not be contusing? must you not be contusing? must he not be contusing? must we not be contusing? must you not be contusing? must they not be contusing?
Perfect	V-ing perfect
must I not have contused? must you not have contused? must he not have contused? must we not have contused? must you not have contused? must they not have contused?	must I not have been contusing? must you not have been contusing? must he not have been contusing? must we not have been contusing? must you not have been contusing? must they not have been contusing?