English verb conjugation
MUST SMARTEN

Regular verb: smarten - smartened - smartened

Affirmation

Simple form	V-ing form
I must smarten you must smarten he must smarten we must smarten you must smarten they must smarten	I must be smartening you must be smartening he must be smartening we must be smartening you must be smartening they must be smartening
Perfect	V-ing perfect
I must have smartened you must have smartened he must have smartened we must have smartened you must have smartened they must have smartened	I must have been smartening you must have been smartening he must have been smartening we must have been smartening you must have been smartening they must have been smartening

Negation

Simple form	V-ing form
I mustn't smarten you mustn't smarten he mustn't smarten we mustn't smarten you mustn't smarten they mustn't smarten	I mustn't be smartening you mustn't be smartening he mustn't be smartening we mustn't be smartening you mustn't be smartening they mustn't be smartening
Perfect	V-ing perfect
I mustn't have smartened you mustn't have smartened he mustn't have smartened we mustn't have smartened you mustn't have smartened they mustn't have smartened	I mustn't have been smartening you mustn't have been smartening he mustn't have been smartening we mustn't have been smartening you mustn't have been smartening they mustn't have been smartening

Interrogative form

Simple form	V-ing form
must I smarten? must you smarten? must he smarten? must we smarten? must you smarten? must they smarten?	must I be smartening? must you be smartening? must he be smartening? must we be smartening? must you be smartening? must they be smartening?
Perfect	V-ing perfect
must I have smartened? must you have smartened? must he have smartened? must we have smartened? must you have smartened? must they have smartened?	must I have been smartening? must you have been smartening? must he have been smartening? must we have been smartening? must you have been smartening? must they have been smartening?

Interro-negative form

Simple form	V-ing form
mustn't I smarten? mustn't you smarten? mustn't he smarten? mustn't we smarten? mustn't you smarten? mustn't they smarten?	mustn't I be smartening? mustn't you be smartening? mustn't he be smartening? mustn't we be smartening? mustn't you be smartening? mustn't they be smartening?
Perfect	V-ing perfect
mustn't I have smartened? mustn't you have smartened? mustn't he have smartened? mustn't we have smartened? mustn't you have smartened? mustn't they have smartened?	mustn't I have been smartening? mustn't you have been smartening? mustn't he have been smartening? mustn't we have been smartening? mustn't you have been smartening? mustn't they have been smartening?