can smarten
Regular verb: smarten - smartened- smartened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
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? 	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?