English verb conjugation
MUST CAUCUS

Regular verb: caucus - caucused - caucused

Affirmation

Simple form	V-ing form
I must caucus you must caucus she must caucus we must caucus you must caucus they must caucus	I must be caucusing you must be caucusing she must be caucusing we must be caucusing you must be caucusing they must be caucusing
Perfect	V-ing perfect
I must have caucused you must have caucused she must have caucused we must have caucused you must have caucused they must have caucused	I must have been caucusing you must have been caucusing she must have been caucusing we must have been caucusing you must have been caucusing they must have been caucusing

Negation

Simple form	V-ing form
I must not caucus you must not caucus she must not caucus we must not caucus you must not caucus they must not caucus	I must not be caucusing you must not be caucusing she must not be caucusing we must not be caucusing you must not be caucusing they must not be caucusing
Perfect	V-ing perfect
I must not have caucused you must not have caucused she must not have caucused we must not have caucused you must not have caucused they must not have caucused	I must not have been caucusing you must not have been caucusing she must not have been caucusing we must not have been caucusing you must not have been caucusing they must not have been caucusing

Interrogative form

Simple form	V-ing form
must I caucus? must you caucus? must she caucus? must we caucus? must you caucus? must they caucus?	must I be caucusing? must you be caucusing? must she be caucusing? must we be caucusing? must you be caucusing? must they be caucusing?
Perfect	V-ing perfect
must I have caucused? must you have caucused? must she have caucused? must we have caucused? must you have caucused? must they have caucused?	must I have been caucusing? must you have been caucusing? must she have been caucusing? must we have been caucusing? must you have been caucusing? must they have been caucusing?

Interro-negative form

Simple form	V-ing form
must I not caucus? must you not caucus? must she not caucus? must we not caucus? must you not caucus? must they not caucus?	must I not be caucusing? must you not be caucusing? must she not be caucusing? must we not be caucusing? must you not be caucusing? must they not be caucusing?
Perfect	V-ing perfect
must I not have caucused? must you not have caucused? must she not have caucused? must we not have caucused? must you not have caucused? must they not have caucused?	must I not have been caucusing? must you not have been caucusing? must she not have been caucusing? must we not have been caucusing? must you not have been caucusing? must they not have been caucusing?