English verb conjugation
COULD PRESTERILIZE

Regular verb: presterilize - presterilized - presterilized

Affirmation

Simple form	V-ing form
I could presterilize you could presterilize she could presterilize we could presterilize you could presterilize they could presterilize	I could be presterilizing you could be presterilizing she could be presterilizing we could be presterilizing you could be presterilizing they could be presterilizing
Perfect	V-ing perfect
I could have presterilized you could have presterilized she could have presterilized we could have presterilized you could have presterilized they could have presterilized	I could have been presterilizing you could have been presterilizing she could have been presterilizing we could have been presterilizing you could have been presterilizing they could have been presterilizing

Negation

Simple form	V-ing form
I could not presterilize you could not presterilize she could not presterilize we could not presterilize you could not presterilize they could not presterilize	I could not be presterilizing you could not be presterilizing she could not be presterilizing we could not be presterilizing you could not be presterilizing they could not be presterilizing
Perfect	V-ing perfect
I could not have presterilized you could not have presterilized she could not have presterilized we could not have presterilized you could not have presterilized they could not have presterilized	I could not have been presterilizing you could not have been presterilizing she could not have been presterilizing we could not have been presterilizing you could not have been presterilizing they could not have been presterilizing

Interrogative form

Simple form	V-ing form
could I presterilize? could you presterilize? could she presterilize? could we presterilize? could you presterilize? could they presterilize?	could I be presterilizing? could you be presterilizing? could she be presterilizing? could we be presterilizing? could you be presterilizing? could they be presterilizing?
Perfect	V-ing perfect
could I have presterilized? could you have presterilized? could she have presterilized? could we have presterilized? could you have presterilized? could they have presterilized?	could I have been presterilizing? could you have been presterilizing? could she have been presterilizing? could we have been presterilizing? could you have been presterilizing? could they have been presterilizing?

Interro-negative form

Simple form	V-ing form
could I not presterilize? could you not presterilize? could she not presterilize? could we not presterilize? could you not presterilize? could they not presterilize?	could I not be presterilizing? could you not be presterilizing? could she not be presterilizing? could we not be presterilizing? could you not be presterilizing? could they not be presterilizing?
Perfect	V-ing perfect
could I not have presterilized? could you not have presterilized? could she not have presterilized? could we not have presterilized? could you not have presterilized? could they not have presterilized?	could I not have been presterilizing? could you not have been presterilizing? could she not have been presterilizing? could we not have been presterilizing? could you not have been presterilizing? could they not have been presterilizing?