English verb conjugation
MUST STERILIZE

Regular verb: sterilize - sterilized - sterilized

Affirmation

Simple form	V-ing form
I must sterilize you must sterilize he must sterilize we must sterilize you must sterilize they must sterilize	I must be sterilizing you must be sterilizing he 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 he 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 he 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 mustn't sterilize you mustn't sterilize he mustn't sterilize we mustn't sterilize you mustn't sterilize they mustn't sterilize	I mustn't be sterilizing you mustn't be sterilizing he mustn't be sterilizing we mustn't be sterilizing you mustn't be sterilizing they mustn't be sterilizing
Perfect	V-ing perfect
I mustn't have sterilized you mustn't have sterilized he mustn't have sterilized we mustn't have sterilized you mustn't have sterilized they mustn't have sterilized	I mustn't have been sterilizing you mustn't have been sterilizing he mustn't have been sterilizing we mustn't have been sterilizing you mustn't have been sterilizing they mustn't have been sterilizing

Interrogative form

Simple form	V-ing form
must I sterilize? must you sterilize? must he sterilize? must we sterilize? must you sterilize? must they sterilize?	must I be sterilizing? must you be sterilizing? must he 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 he 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 he 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
mustn't I sterilize? mustn't you sterilize? mustn't he sterilize? mustn't we sterilize? mustn't you sterilize? mustn't they sterilize?	mustn't I be sterilizing? mustn't you be sterilizing? mustn't he be sterilizing? mustn't we be sterilizing? mustn't you be sterilizing? mustn't they be sterilizing?
Perfect	V-ing perfect
mustn't I have sterilized? mustn't you have sterilized? mustn't he have sterilized? mustn't we have sterilized? mustn't you have sterilized? mustn't they have sterilized?	mustn't I have been sterilizing? mustn't you have been sterilizing? mustn't he have been sterilizing? mustn't we have been sterilizing? mustn't you have been sterilizing? mustn't they have been sterilizing?