I could stapedectomize you could stapedectomize he could stapedectomize we could stapedectomize you could stapedectomize they could stapedectomize
V-ing form
I could be stapedectomizing you could be stapedectomizing he could be stapedectomizing we could be stapedectomizing you could be stapedectomizing they could be stapedectomizing
Perfect
I could have stapedectomized you could have stapedectomized he could have stapedectomized we could have stapedectomized you could have stapedectomized they could have stapedectomized
V-ing perfect
I could have been stapedectomizing you could have been stapedectomizing he could have been stapedectomizing we could have been stapedectomizing you could have been stapedectomizing they could have been stapedectomizing
Negation
Simple form
I could not stapedectomize you could not stapedectomize he could not stapedectomize we could not stapedectomize you could not stapedectomize they could not stapedectomize
V-ing form
I could not be stapedectomizing you could not be stapedectomizing he could not be stapedectomizing we could not be stapedectomizing you could not be stapedectomizing they could not be stapedectomizing
Perfect
I could not have stapedectomized you could not have stapedectomized he could not have stapedectomized we could not have stapedectomized you could not have stapedectomized they could not have stapedectomized
V-ing perfect
I could not have been stapedectomizing you could not have been stapedectomizing he could not have been stapedectomizing we could not have been stapedectomizing you could not have been stapedectomizing they could not have been stapedectomizing
Interrogative form
Simple form
could I stapedectomize? could you stapedectomize? could he stapedectomize? could we stapedectomize? could you stapedectomize? could they stapedectomize?
V-ing form
could I be stapedectomizing? could you be stapedectomizing? could he be stapedectomizing? could we be stapedectomizing? could you be stapedectomizing? could they be stapedectomizing?
Perfect
could I have stapedectomized? could you have stapedectomized? could he have stapedectomized? could we have stapedectomized? could you have stapedectomized? could they have stapedectomized?
V-ing perfect
could I have been stapedectomizing? could you have been stapedectomizing? could he have been stapedectomizing? could we have been stapedectomizing? could you have been stapedectomizing? could they have been stapedectomizing?
Interro-negative form
Simple form
could I not stapedectomize? could you not stapedectomize? could he not stapedectomize? could we not stapedectomize? could you not stapedectomize? could they not stapedectomize?
V-ing form
could I not be stapedectomizing? could you not be stapedectomizing? could he not be stapedectomizing? could we not be stapedectomizing? could you not be stapedectomizing? could they not be stapedectomizing?
Perfect
could I not have stapedectomized? could you not have stapedectomized? could he not have stapedectomized? could we not have stapedectomized? could you not have stapedectomized? could they not have stapedectomized?
V-ing perfect
could I not have been stapedectomizing? could you not have been stapedectomizing? could he not have been stapedectomizing? could we not have been stapedectomizing? could you not have been stapedectomizing? could they not have been stapedectomizing?