I could euthanize you could euthanize he could euthanize we could euthanize you could euthanize they could euthanize
V-ing form
I could be euthanizing you could be euthanizing he could be euthanizing we could be euthanizing you could be euthanizing they could be euthanizing
Perfect
I could have euthanized you could have euthanized he could have euthanized we could have euthanized you could have euthanized they could have euthanized
V-ing perfect
I could have been euthanizing you could have been euthanizing he could have been euthanizing we could have been euthanizing you could have been euthanizing they could have been euthanizing
Negation
Simple form
I could not euthanize you could not euthanize he could not euthanize we could not euthanize you could not euthanize they could not euthanize
V-ing form
I could not be euthanizing you could not be euthanizing he could not be euthanizing we could not be euthanizing you could not be euthanizing they could not be euthanizing
Perfect
I could not have euthanized you could not have euthanized he could not have euthanized we could not have euthanized you could not have euthanized they could not have euthanized
V-ing perfect
I could not have been euthanizing you could not have been euthanizing he could not have been euthanizing we could not have been euthanizing you could not have been euthanizing they could not have been euthanizing
Interrogative form
Simple form
could I euthanize? could you euthanize? could he euthanize? could we euthanize? could you euthanize? could they euthanize?
V-ing form
could I be euthanizing? could you be euthanizing? could he be euthanizing? could we be euthanizing? could you be euthanizing? could they be euthanizing?
Perfect
could I have euthanized? could you have euthanized? could he have euthanized? could we have euthanized? could you have euthanized? could they have euthanized?
V-ing perfect
could I have been euthanizing? could you have been euthanizing? could he have been euthanizing? could we have been euthanizing? could you have been euthanizing? could they have been euthanizing?
Interro-negative form
Simple form
could I not euthanize? could you not euthanize? could he not euthanize? could we not euthanize? could you not euthanize? could they not euthanize?
V-ing form
could I not be euthanizing? could you not be euthanizing? could he not be euthanizing? could we not be euthanizing? could you not be euthanizing? could they not be euthanizing?
Perfect
could I not have euthanized? could you not have euthanized? could he not have euthanized? could we not have euthanized? could you not have euthanized? could they not have euthanized?
V-ing perfect
could I not have been euthanizing? could you not have been euthanizing? could he not have been euthanizing? could we not have been euthanizing? could you not have been euthanizing? could they not have been euthanizing?