English verb conjugation
COULD SANITIZE

Regular verb: sanitize - sanitized - sanitized

Affirmation

Simple form	V-ing form
I could sanitize you could sanitize he could sanitize we could sanitize you could sanitize they could sanitize	I could be sanitizing you could be sanitizing he could be sanitizing we could be sanitizing you could be sanitizing they could be sanitizing
Perfect	V-ing perfect
I could have sanitized you could have sanitized he could have sanitized we could have sanitized you could have sanitized they could have sanitized	I could have been sanitizing you could have been sanitizing he could have been sanitizing we could have been sanitizing you could have been sanitizing they could have been sanitizing

Negation

Simple form	V-ing form
I could not sanitize you could not sanitize he could not sanitize we could not sanitize you could not sanitize they could not sanitize	I could not be sanitizing you could not be sanitizing he could not be sanitizing we could not be sanitizing you could not be sanitizing they could not be sanitizing
Perfect	V-ing perfect
I could not have sanitized you could not have sanitized he could not have sanitized we could not have sanitized you could not have sanitized they could not have sanitized	I could not have been sanitizing you could not have been sanitizing he could not have been sanitizing we could not have been sanitizing you could not have been sanitizing they could not have been sanitizing

Interrogative form

Simple form	V-ing form
could I sanitize? could you sanitize? could he sanitize? could we sanitize? could you sanitize? could they sanitize?	could I be sanitizing? could you be sanitizing? could he be sanitizing? could we be sanitizing? could you be sanitizing? could they be sanitizing?
Perfect	V-ing perfect
could I have sanitized? could you have sanitized? could he have sanitized? could we have sanitized? could you have sanitized? could they have sanitized?	could I have been sanitizing? could you have been sanitizing? could he have been sanitizing? could we have been sanitizing? could you have been sanitizing? could they have been sanitizing?

Interro-negative form

Simple form	V-ing form
could I not sanitize? could you not sanitize? could he not sanitize? could we not sanitize? could you not sanitize? could they not sanitize?	could I not be sanitizing? could you not be sanitizing? could he not be sanitizing? could we not be sanitizing? could you not be sanitizing? could they not be sanitizing?
Perfect	V-ing perfect
could I not have sanitized? could you not have sanitized? could he not have sanitized? could we not have sanitized? could you not have sanitized? could they not have sanitized?	could I not have been sanitizing? could you not have been sanitizing? could he not have been sanitizing? could we not have been sanitizing? could you not have been sanitizing? could they not have been sanitizing?