English verb conjugation
CAN SMARTEN

Regular verb: smarten - smartened - smartened

Affirmation

Simple form	V-ing form
I can smarten you can smarten she can smarten we can smarten you can smarten they can smarten	I can be smartening you can be smartening she 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 she 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 she 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 she 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 she 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 she 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 she 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 she smarten? can we smarten? can you smarten? can they smarten?	can I be smartening? can you be smartening? can she 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 she 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 she 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 she 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 she 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 she 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 she have been smartening? can't we have been smartening? can't you have been smartening? can't they have been smartening?