English verb conjugation
MUST THEORIZE

Regular verb: theorize - theorized - theorized

Affirmation

Simple form	V-ing form
I must theorize you must theorize he must theorize we must theorize you must theorize they must theorize	I must be theorizing you must be theorizing he must be theorizing we must be theorizing you must be theorizing they must be theorizing
Perfect	V-ing perfect
I must have theorized you must have theorized he must have theorized we must have theorized you must have theorized they must have theorized	I must have been theorizing you must have been theorizing he must have been theorizing we must have been theorizing you must have been theorizing they must have been theorizing

Negation

Simple form	V-ing form
I must not theorize you must not theorize he must not theorize we must not theorize you must not theorize they must not theorize	I must not be theorizing you must not be theorizing he must not be theorizing we must not be theorizing you must not be theorizing they must not be theorizing
Perfect	V-ing perfect
I must not have theorized you must not have theorized he must not have theorized we must not have theorized you must not have theorized they must not have theorized	I must not have been theorizing you must not have been theorizing he must not have been theorizing we must not have been theorizing you must not have been theorizing they must not have been theorizing

Interrogative form

Simple form	V-ing form
must I theorize? must you theorize? must he theorize? must we theorize? must you theorize? must they theorize?	must I be theorizing? must you be theorizing? must he be theorizing? must we be theorizing? must you be theorizing? must they be theorizing?
Perfect	V-ing perfect
must I have theorized? must you have theorized? must he have theorized? must we have theorized? must you have theorized? must they have theorized?	must I have been theorizing? must you have been theorizing? must he have been theorizing? must we have been theorizing? must you have been theorizing? must they have been theorizing?

Interro-negative form

Simple form	V-ing form
must I not theorize? must you not theorize? must he not theorize? must we not theorize? must you not theorize? must they not theorize?	must I not be theorizing? must you not be theorizing? must he not be theorizing? must we not be theorizing? must you not be theorizing? must they not be theorizing?
Perfect	V-ing perfect
must I not have theorized? must you not have theorized? must he not have theorized? must we not have theorized? must you not have theorized? must they not have theorized?	must I not have been theorizing? must you not have been theorizing? must he not have been theorizing? must we not have been theorizing? must you not have been theorizing? must they not have been theorizing?