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 must not smarten you must not smarten he must not smarten we must not smarten you must not smarten they must not smarten	I must not be smartening you must not be smartening he must not be smartening we must not be smartening you must not be smartening they must not be smartening
Perfect	V-ing perfect
I must not have smartened you must not have smartened he must not have smartened we must not have smartened you must not have smartened they must not have smartened	I must not have been smartening you must not have been smartening he must not have been smartening we must not have been smartening you must not have been smartening they must not 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
must I not smarten? must you not smarten? must he not smarten? must we not smarten? must you not smarten? must they not smarten?	must I not be smartening? must you not be smartening? must he not be smartening? must we not be smartening? must you not be smartening? must they not be smartening?
Perfect	V-ing perfect
must I not have smartened? must you not have smartened? must he not have smartened? must we not have smartened? must you not have smartened? must they not have smartened?	must I not have been smartening? must you not have been smartening? must he not have been smartening? must we not have been smartening? must you not have been smartening? must they not have been smartening?