English verb conjugation
MUST OWN

Regular verb: own - owned - owned

Affirmation

Simple form	V-ing form
I must own you must own he must own we must own you must own they must own	I must be owning you must be owning he must be owning we must be owning you must be owning they must be owning
Perfect	V-ing perfect
I must have owned you must have owned he must have owned we must have owned you must have owned they must have owned	I must have been owning you must have been owning he must have been owning we must have been owning you must have been owning they must have been owning

Negation

Simple form	V-ing form
I must not own you must not own he must not own we must not own you must not own they must not own	I must not be owning you must not be owning he must not be owning we must not be owning you must not be owning they must not be owning
Perfect	V-ing perfect
I must not have owned you must not have owned he must not have owned we must not have owned you must not have owned they must not have owned	I must not have been owning you must not have been owning he must not have been owning we must not have been owning you must not have been owning they must not have been owning

Interrogative form

Simple form	V-ing form
must I own? must you own? must he own? must we own? must you own? must they own?	must I be owning? must you be owning? must he be owning? must we be owning? must you be owning? must they be owning?
Perfect	V-ing perfect
must I have owned? must you have owned? must he have owned? must we have owned? must you have owned? must they have owned?	must I have been owning? must you have been owning? must he have been owning? must we have been owning? must you have been owning? must they have been owning?

Interro-negative form

Simple form	V-ing form
must I not own? must you not own? must he not own? must we not own? must you not own? must they not own?	must I not be owning? must you not be owning? must he not be owning? must we not be owning? must you not be owning? must they not be owning?
Perfect	V-ing perfect
must I not have owned? must you not have owned? must he not have owned? must we not have owned? must you not have owned? must they not have owned?	must I not have been owning? must you not have been owning? must he not have been owning? must we not have been owning? must you not have been owning? must they not have been owning?