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