English verb conjugation
COULD SMOTHER

Regular verb: smother - smothered - smothered

Affirmation

Simple form	V-ing form
I could smother you could smother she could smother we could smother you could smother they could smother	I could be smothering you could be smothering she could be smothering we could be smothering you could be smothering they could be smothering
Perfect	V-ing perfect
I could have smothered you could have smothered she could have smothered we could have smothered you could have smothered they could have smothered	I could have been smothering you could have been smothering she could have been smothering we could have been smothering you could have been smothering they could have been smothering

Negation

Simple form	V-ing form
I could not smother you could not smother she could not smother we could not smother you could not smother they could not smother	I could not be smothering you could not be smothering she could not be smothering we could not be smothering you could not be smothering they could not be smothering
Perfect	V-ing perfect
I could not have smothered you could not have smothered she could not have smothered we could not have smothered you could not have smothered they could not have smothered	I could not have been smothering you could not have been smothering she could not have been smothering we could not have been smothering you could not have been smothering they could not have been smothering

Interrogative form

Simple form	V-ing form
could I smother? could you smother? could she smother? could we smother? could you smother? could they smother?	could I be smothering? could you be smothering? could she be smothering? could we be smothering? could you be smothering? could they be smothering?
Perfect	V-ing perfect
could I have smothered? could you have smothered? could she have smothered? could we have smothered? could you have smothered? could they have smothered?	could I have been smothering? could you have been smothering? could she have been smothering? could we have been smothering? could you have been smothering? could they have been smothering?

Interro-negative form

Simple form	V-ing form
could I not smother? could you not smother? could she not smother? could we not smother? could you not smother? could they not smother?	could I not be smothering? could you not be smothering? could she not be smothering? could we not be smothering? could you not be smothering? could they not be smothering?
Perfect	V-ing perfect
could I not have smothered? could you not have smothered? could she not have smothered? could we not have smothered? could you not have smothered? could they not have smothered?	could I not have been smothering? could you not have been smothering? could she not have been smothering? could we not have been smothering? could you not have been smothering? could they not have been smothering?