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 couldn't stapedectomize you couldn't stapedectomize he couldn't stapedectomize we couldn't stapedectomize you couldn't stapedectomize they couldn't stapedectomize
V-ing form
I couldn't be stapedectomizing you couldn't be stapedectomizing he couldn't be stapedectomizing we couldn't be stapedectomizing you couldn't be stapedectomizing they couldn't be stapedectomizing
Perfect
I couldn't have stapedectomized you couldn't have stapedectomized he couldn't have stapedectomized we couldn't have stapedectomized you couldn't have stapedectomized they couldn't have stapedectomized
V-ing perfect
I couldn't have been stapedectomizing you couldn't have been stapedectomizing he couldn't have been stapedectomizing we couldn't have been stapedectomizing you couldn't have been stapedectomizing they couldn't 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
couldn't I stapedectomize? couldn't you stapedectomize? couldn't he stapedectomize? couldn't we stapedectomize? couldn't you stapedectomize? couldn't they stapedectomize?
V-ing form
couldn't I be stapedectomizing? couldn't you be stapedectomizing? couldn't he be stapedectomizing? couldn't we be stapedectomizing? couldn't you be stapedectomizing? couldn't they be stapedectomizing?
Perfect
couldn't I have stapedectomized? couldn't you have stapedectomized? couldn't he have stapedectomized? couldn't we have stapedectomized? couldn't you have stapedectomized? couldn't they have stapedectomized?
V-ing perfect
couldn't I have been stapedectomizing? couldn't you have been stapedectomizing? couldn't he have been stapedectomizing? couldn't we have been stapedectomizing? couldn't you have been stapedectomizing? couldn't they have been stapedectomizing?