I could passivize you could passivize she could passivize we could passivize you could passivize they could passivize
V-ing form
I could be passivizing you could be passivizing she could be passivizing we could be passivizing you could be passivizing they could be passivizing
Perfect
I could have passivized you could have passivized she could have passivized we could have passivized you could have passivized they could have passivized
V-ing perfect
I could have been passivizing you could have been passivizing she could have been passivizing we could have been passivizing you could have been passivizing they could have been passivizing
Negation
Simple form
I could not passivize you could not passivize she could not passivize we could not passivize you could not passivize they could not passivize
V-ing form
I could not be passivizing you could not be passivizing she could not be passivizing we could not be passivizing you could not be passivizing they could not be passivizing
Perfect
I could not have passivized you could not have passivized she could not have passivized we could not have passivized you could not have passivized they could not have passivized
V-ing perfect
I could not have been passivizing you could not have been passivizing she could not have been passivizing we could not have been passivizing you could not have been passivizing they could not have been passivizing
Interrogative form
Simple form
could I passivize? could you passivize? could she passivize? could we passivize? could you passivize? could they passivize?
V-ing form
could I be passivizing? could you be passivizing? could she be passivizing? could we be passivizing? could you be passivizing? could they be passivizing?
Perfect
could I have passivized? could you have passivized? could she have passivized? could we have passivized? could you have passivized? could they have passivized?
V-ing perfect
could I have been passivizing? could you have been passivizing? could she have been passivizing? could we have been passivizing? could you have been passivizing? could they have been passivizing?
Interro-negative form
Simple form
could I not passivize? could you not passivize? could she not passivize? could we not passivize? could you not passivize? could they not passivize?
V-ing form
could I not be passivizing? could you not be passivizing? could she not be passivizing? could we not be passivizing? could you not be passivizing? could they not be passivizing?
Perfect
could I not have passivized? could you not have passivized? could she not have passivized? could we not have passivized? could you not have passivized? could they not have passivized?
V-ing perfect
could I not have been passivizing? could you not have been passivizing? could she not have been passivizing? could we not have been passivizing? could you not have been passivizing? could they not have been passivizing?