English verb conjugation
MUST CARBURIZE

Regular verb: carburize - carburized - carburized

Affirmation

Simple form	V-ing form
I must carburize you must carburize he must carburize we must carburize you must carburize they must carburize	I must be carburizing you must be carburizing he must be carburizing we must be carburizing you must be carburizing they must be carburizing
Perfect	V-ing perfect
I must have carburized you must have carburized he must have carburized we must have carburized you must have carburized they must have carburized	I must have been carburizing you must have been carburizing he must have been carburizing we must have been carburizing you must have been carburizing they must have been carburizing

Negation

Simple form	V-ing form
I must not carburize you must not carburize he must not carburize we must not carburize you must not carburize they must not carburize	I must not be carburizing you must not be carburizing he must not be carburizing we must not be carburizing you must not be carburizing they must not be carburizing
Perfect	V-ing perfect
I must not have carburized you must not have carburized he must not have carburized we must not have carburized you must not have carburized they must not have carburized	I must not have been carburizing you must not have been carburizing he must not have been carburizing we must not have been carburizing you must not have been carburizing they must not have been carburizing

Interrogative form

Simple form	V-ing form
must I carburize? must you carburize? must he carburize? must we carburize? must you carburize? must they carburize?	must I be carburizing? must you be carburizing? must he be carburizing? must we be carburizing? must you be carburizing? must they be carburizing?
Perfect	V-ing perfect
must I have carburized? must you have carburized? must he have carburized? must we have carburized? must you have carburized? must they have carburized?	must I have been carburizing? must you have been carburizing? must he have been carburizing? must we have been carburizing? must you have been carburizing? must they have been carburizing?

Interro-negative form

Simple form	V-ing form
must I not carburize? must you not carburize? must he not carburize? must we not carburize? must you not carburize? must they not carburize?	must I not be carburizing? must you not be carburizing? must he not be carburizing? must we not be carburizing? must you not be carburizing? must they not be carburizing?
Perfect	V-ing perfect
must I not have carburized? must you not have carburized? must he not have carburized? must we not have carburized? must you not have carburized? must they not have carburized?	must I not have been carburizing? must you not have been carburizing? must he not have been carburizing? must we not have been carburizing? must you not have been carburizing? must they not have been carburizing?