English verb conjugation
MUST EXTEMPORIZE

Regular verb: extemporize - extemporized - extemporized

Affirmation

Simple form	V-ing form
I must extemporize you must extemporize he must extemporize we must extemporize you must extemporize they must extemporize	I must be extemporizing you must be extemporizing he must be extemporizing we must be extemporizing you must be extemporizing they must be extemporizing
Perfect	V-ing perfect
I must have extemporized you must have extemporized he must have extemporized we must have extemporized you must have extemporized they must have extemporized	I must have been extemporizing you must have been extemporizing he must have been extemporizing we must have been extemporizing you must have been extemporizing they must have been extemporizing

Negation

Simple form	V-ing form
I must not extemporize you must not extemporize he must not extemporize we must not extemporize you must not extemporize they must not extemporize	I must not be extemporizing you must not be extemporizing he must not be extemporizing we must not be extemporizing you must not be extemporizing they must not be extemporizing
Perfect	V-ing perfect
I must not have extemporized you must not have extemporized he must not have extemporized we must not have extemporized you must not have extemporized they must not have extemporized	I must not have been extemporizing you must not have been extemporizing he must not have been extemporizing we must not have been extemporizing you must not have been extemporizing they must not have been extemporizing

Interrogative form

Simple form	V-ing form
must I extemporize? must you extemporize? must he extemporize? must we extemporize? must you extemporize? must they extemporize?	must I be extemporizing? must you be extemporizing? must he be extemporizing? must we be extemporizing? must you be extemporizing? must they be extemporizing?
Perfect	V-ing perfect
must I have extemporized? must you have extemporized? must he have extemporized? must we have extemporized? must you have extemporized? must they have extemporized?	must I have been extemporizing? must you have been extemporizing? must he have been extemporizing? must we have been extemporizing? must you have been extemporizing? must they have been extemporizing?

Interro-negative form

Simple form	V-ing form
must I not extemporize? must you not extemporize? must he not extemporize? must we not extemporize? must you not extemporize? must they not extemporize?	must I not be extemporizing? must you not be extemporizing? must he not be extemporizing? must we not be extemporizing? must you not be extemporizing? must they not be extemporizing?
Perfect	V-ing perfect
must I not have extemporized? must you not have extemporized? must he not have extemporized? must we not have extemporized? must you not have extemporized? must they not have extemporized?	must I not have been extemporizing? must you not have been extemporizing? must he not have been extemporizing? must we not have been extemporizing? must you not have been extemporizing? must they not have been extemporizing?