English verb conjugation
MUST SMACK

Regular verb: smack - smacked - smacked

Affirmation

Simple form	V-ing form
I must smack you must smack he must smack we must smack you must smack they must smack	I must be smacking you must be smacking he must be smacking we must be smacking you must be smacking they must be smacking
Perfect	V-ing perfect
I must have smacked you must have smacked he must have smacked we must have smacked you must have smacked they must have smacked	I must have been smacking you must have been smacking he must have been smacking we must have been smacking you must have been smacking they must have been smacking

Negation

Simple form	V-ing form
I mustn't smack you mustn't smack he mustn't smack we mustn't smack you mustn't smack they mustn't smack	I mustn't be smacking you mustn't be smacking he mustn't be smacking we mustn't be smacking you mustn't be smacking they mustn't be smacking
Perfect	V-ing perfect
I mustn't have smacked you mustn't have smacked he mustn't have smacked we mustn't have smacked you mustn't have smacked they mustn't have smacked	I mustn't have been smacking you mustn't have been smacking he mustn't have been smacking we mustn't have been smacking you mustn't have been smacking they mustn't have been smacking

Interrogative form

Simple form	V-ing form
must I smack? must you smack? must he smack? must we smack? must you smack? must they smack?	must I be smacking? must you be smacking? must he be smacking? must we be smacking? must you be smacking? must they be smacking?
Perfect	V-ing perfect
must I have smacked? must you have smacked? must he have smacked? must we have smacked? must you have smacked? must they have smacked?	must I have been smacking? must you have been smacking? must he have been smacking? must we have been smacking? must you have been smacking? must they have been smacking?

Interro-negative form

Simple form	V-ing form
mustn't I smack? mustn't you smack? mustn't he smack? mustn't we smack? mustn't you smack? mustn't they smack?	mustn't I be smacking? mustn't you be smacking? mustn't he be smacking? mustn't we be smacking? mustn't you be smacking? mustn't they be smacking?
Perfect	V-ing perfect
mustn't I have smacked? mustn't you have smacked? mustn't he have smacked? mustn't we have smacked? mustn't you have smacked? mustn't they have smacked?	mustn't I have been smacking? mustn't you have been smacking? mustn't he have been smacking? mustn't we have been smacking? mustn't you have been smacking? mustn't they have been smacking?