English verb conjugation
MUST STERILIZE

Regular verb: sterilize - sterilized - sterilized

Affirmation

Simple form	V-ing form
I must sterilize you must sterilize she must sterilize we must sterilize you must sterilize they must sterilize	I must be sterilizing you must be sterilizing she must be sterilizing we must be sterilizing you must be sterilizing they must be sterilizing
Perfect	V-ing perfect
I must have sterilized you must have sterilized she must have sterilized we must have sterilized you must have sterilized they must have sterilized	I must have been sterilizing you must have been sterilizing she must have been sterilizing we must have been sterilizing you must have been sterilizing they must have been sterilizing

Negation

Simple form	V-ing form
I must not sterilize you must not sterilize she must not sterilize we must not sterilize you must not sterilize they must not sterilize	I must not be sterilizing you must not be sterilizing she must not be sterilizing we must not be sterilizing you must not be sterilizing they must not be sterilizing
Perfect	V-ing perfect
I must not have sterilized you must not have sterilized she must not have sterilized we must not have sterilized you must not have sterilized they must not have sterilized	I must not have been sterilizing you must not have been sterilizing she must not have been sterilizing we must not have been sterilizing you must not have been sterilizing they must not have been sterilizing

Interrogative form

Simple form	V-ing form
must I sterilize? must you sterilize? must she sterilize? must we sterilize? must you sterilize? must they sterilize?	must I be sterilizing? must you be sterilizing? must she be sterilizing? must we be sterilizing? must you be sterilizing? must they be sterilizing?
Perfect	V-ing perfect
must I have sterilized? must you have sterilized? must she have sterilized? must we have sterilized? must you have sterilized? must they have sterilized?	must I have been sterilizing? must you have been sterilizing? must she have been sterilizing? must we have been sterilizing? must you have been sterilizing? must they have been sterilizing?

Interro-negative form

Simple form	V-ing form
must I not sterilize? must you not sterilize? must she not sterilize? must we not sterilize? must you not sterilize? must they not sterilize?	must I not be sterilizing? must you not be sterilizing? must she not be sterilizing? must we not be sterilizing? must you not be sterilizing? must they not be sterilizing?
Perfect	V-ing perfect
must I not have sterilized? must you not have sterilized? must she not have sterilized? must we not have sterilized? must you not have sterilized? must they not have sterilized?	must I not have been sterilizing? must you not have been sterilizing? must she not have been sterilizing? must we not have been sterilizing? must you not have been sterilizing? must they not have been sterilizing?