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 mustn't theorize you mustn't theorize he mustn't theorize we mustn't theorize you mustn't theorize they mustn't theorize	I mustn't be theorizing you mustn't be theorizing he mustn't be theorizing we mustn't be theorizing you mustn't be theorizing they mustn't be theorizing
Perfect	V-ing perfect
I mustn't have theorized you mustn't have theorized he mustn't have theorized we mustn't have theorized you mustn't have theorized they mustn't have theorized	I mustn't have been theorizing you mustn't have been theorizing he mustn't have been theorizing we mustn't have been theorizing you mustn't have been theorizing they mustn't 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
mustn't I theorize? mustn't you theorize? mustn't he theorize? mustn't we theorize? mustn't you theorize? mustn't they theorize?	mustn't I be theorizing? mustn't you be theorizing? mustn't he be theorizing? mustn't we be theorizing? mustn't you be theorizing? mustn't they be theorizing?
Perfect	V-ing perfect
mustn't I have theorized? mustn't you have theorized? mustn't he have theorized? mustn't we have theorized? mustn't you have theorized? mustn't they have theorized?	mustn't I have been theorizing? mustn't you have been theorizing? mustn't he have been theorizing? mustn't we have been theorizing? mustn't you have been theorizing? mustn't they have been theorizing?