English verb conjugation
CAN SMARTEN

Regular verb: smarten - smartened - smartened

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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