English verb conjugation
MUST SMOTHER

Regular verb: smother - smothered - smothered

Affirmation

Simple form	V-ing form
I must smother you must smother he must smother we must smother you must smother they must smother	I must be smothering you must be smothering he 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 he 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 he 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 mustn't smother you mustn't smother he mustn't smother we mustn't smother you mustn't smother they mustn't smother	I mustn't be smothering you mustn't be smothering he mustn't be smothering we mustn't be smothering you mustn't be smothering they mustn't be smothering
Perfect	V-ing perfect
I mustn't have smothered you mustn't have smothered he mustn't have smothered we mustn't have smothered you mustn't have smothered they mustn't have smothered	I mustn't have been smothering you mustn't have been smothering he mustn't have been smothering we mustn't have been smothering you mustn't have been smothering they mustn't have been smothering

Interrogative form

Simple form	V-ing form
must I smother? must you smother? must he smother? must we smother? must you smother? must they smother?	must I be smothering? must you be smothering? must he 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 he 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 he 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
mustn't I smother? mustn't you smother? mustn't he smother? mustn't we smother? mustn't you smother? mustn't they smother?	mustn't I be smothering? mustn't you be smothering? mustn't he be smothering? mustn't we be smothering? mustn't you be smothering? mustn't they be smothering?
Perfect	V-ing perfect
mustn't I have smothered? mustn't you have smothered? mustn't he have smothered? mustn't we have smothered? mustn't you have smothered? mustn't they have smothered?	mustn't I have been smothering? mustn't you have been smothering? mustn't he have been smothering? mustn't we have been smothering? mustn't you have been smothering? mustn't they have been smothering?