can smart
Regular verb: smart - smarted- smarted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can smart
you can smart
she can smart
we can smart
you can smart
they can smart 	I can be smarting
you can be smarting
she can be smarting
we can be smarting
you can be smarting
they can be smarting	I can have smarted
you can have smarted
she can have smarted
we can have smarted
you can have smarted
they can have smarted	I can have been smarting
you can have been smarting
she can have been smarting
we can have been smarting
you can have been smarting
they can have been smarting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't smart
you can't smart
she can't smart
we can't smart
you can't smart
they can't smart 	I can't be smarting
you can't be smarting
she can't be smarting
we can't be smarting
you can't be smarting
they can't be smarting	I can't have smarted
you can't have smarted
she can't have smarted
we can't have smarted
you can't have smarted
they can't have smarted	I can't have been smarting
you can't have been smarting
she can't have been smarting
we can't have been smarting
you can't have been smarting
they can't have been smarting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I smart?
can you smart?
can she smart?
can we smart?
can you smart?
can they smart? 	can I be smarting?
can you be smarting?
can she be smarting?
can we be smarting?
can you be smarting?
can they be smarting? 	can I have smarted?
can you have smarted?
can she have smarted?
can we have smarted?
can you have smarted?
can they have smarted? 	can I have been smarting?
can you have been smarting?
can she have been smarting?
can we have been smarting?
can you have been smarting?
can they have been smarting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I smart?
can't you smart?
can't she smart?
can't we smart?
can't you smart?
can't they smart? 	can't I be smarting?
can't you be smarting?
can't she be smarting?
can't we be smarting?
can't you be smarting?
can't they be smarting? 	can't I have smarted?
can't you have smarted?
can't she have smarted?
can't we have smarted?
can't you have smarted?
can't they have smarted? 	can't I have been smarting?
can't you have been smarting?
can't she have been smarting?
can't we have been smarting?
can't you have been smarting?
can't they have been smarting?