must smarten
Verbo regular: smarten - smartened- smartened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must smarten
you must smarten
he must smarten
we must smarten
you must smarten
they must smarten 	I must be smartening
you must be smartening
he must be smartening
we must be smartening
you must be smartening
they must be smartening	I must have smartened
you must have smartened
he must have smartened
we must have smartened
you must have smartened
they must have smartened	I must have been smartening
you must have been smartening
he must have been smartening
we must have been smartening
you must have been smartening
they must have been smartening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not smarten
you must not smarten
he must not smarten
we must not smarten
you must not smarten
they must not smarten 	I must not be smartening
you must not be smartening
he must not be smartening
we must not be smartening
you must not be smartening
they must not be smartening	I must not have smartened
you must not have smartened
he must not have smartened
we must not have smartened
you must not have smartened
they must not have smartened	I must not have been smartening
you must not have been smartening
he must not have been smartening
we must not have been smartening
you must not have been smartening
they must not have been smartening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I smarten?
must you smarten?
must he smarten?
must we smarten?
must you smarten?
must they smarten? 	must I be smartening?
must you be smartening?
must he be smartening?
must we be smartening?
must you be smartening?
must they be smartening? 	must I have smartened?
must you have smartened?
must he have smartened?
must we have smartened?
must you have smartened?
must they have smartened? 	must I have been smartening?
must you have been smartening?
must he have been smartening?
must we have been smartening?
must you have been smartening?
must they have been smartening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not smarten?
must you not smarten?
must he not smarten?
must we not smarten?
must you not smarten?
must they not smarten? 	must I not be smartening?
must you not be smartening?
must he not be smartening?
must we not be smartening?
must you not be smartening?
must they not be smartening? 	must I not have smartened?
must you not have smartened?
must he not have smartened?
must we not have smartened?
must you not have smartened?
must they not have smartened? 	must I not have been smartening?
must you not have been smartening?
must he not have been smartening?
must we not have been smartening?
must you not have been smartening?
must they not have been smartening?