English verb conjugation
MUST SMOTHER

Regular verb: smother - smothered - smothered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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