English verb conjugation
OUGHT TO STERILIZE

Regular verb: sterilize - sterilized - sterilized

Affirmation

Simple form	V-ing form
I ought to sterilize you ought to sterilize he ought to sterilize we ought to sterilize you ought to sterilize they ought to sterilize	I ought to be sterilizing you ought to be sterilizing he ought to be sterilizing we ought to be sterilizing you ought to be sterilizing they ought to be sterilizing
Perfect	V-ing perfect
I ought to have sterilized you ought to have sterilized he ought to have sterilized we ought to have sterilized you ought to have sterilized they ought to have sterilized	I ought to have been sterilizing you ought to have been sterilizing he ought to have been sterilizing we ought to have been sterilizing you ought to have been sterilizing they ought to have been sterilizing

Negation

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

Interrogative form

Simple form	V-ing form
ought to I sterilize? ought to you sterilize? ought to he sterilize? ought to we sterilize? ought to you sterilize? ought to they sterilize?	ought to I be sterilizing? ought to you be sterilizing? ought to he be sterilizing? ought to we be sterilizing? ought to you be sterilizing? ought to they be sterilizing?
Perfect	V-ing perfect
ought to I have sterilized? ought to you have sterilized? ought to he have sterilized? ought to we have sterilized? ought to you have sterilized? ought to they have sterilized?	ought to I have been sterilizing? ought to you have been sterilizing? ought to he have been sterilizing? ought to we have been sterilizing? ought to you have been sterilizing? ought to they have been sterilizing?

Interro-negative form

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