must summate
Verbo regular: summate - summated- summated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must summate
you must summate
he must summate
we must summate
you must summate
they must summate 	I must be summating
you must be summating
he must be summating
we must be summating
you must be summating
they must be summating	I must have summated
you must have summated
he must have summated
we must have summated
you must have summated
they must have summated	I must have been summating
you must have been summating
he must have been summating
we must have been summating
you must have been summating
they must have been summating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't summate
you mustn't summate
he mustn't summate
we mustn't summate
you mustn't summate
they mustn't summate 	I mustn't be summating
you mustn't be summating
he mustn't be summating
we mustn't be summating
you mustn't be summating
they mustn't be summating	I mustn't have summated
you mustn't have summated
he mustn't have summated
we mustn't have summated
you mustn't have summated
they mustn't have summated	I mustn't have been summating
you mustn't have been summating
he mustn't have been summating
we mustn't have been summating
you mustn't have been summating
they mustn't have been summating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I summate?
must you summate?
must he summate?
must we summate?
must you summate?
must they summate? 	must I be summating?
must you be summating?
must he be summating?
must we be summating?
must you be summating?
must they be summating? 	must I have summated?
must you have summated?
must he have summated?
must we have summated?
must you have summated?
must they have summated? 	must I have been summating?
must you have been summating?
must he have been summating?
must we have been summating?
must you have been summating?
must they have been summating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I summate?
mustn't you summate?
mustn't he summate?
mustn't we summate?
mustn't you summate?
mustn't they summate? 	mustn't I be summating?
mustn't you be summating?
mustn't he be summating?
mustn't we be summating?
mustn't you be summating?
mustn't they be summating? 	mustn't I have summated?
mustn't you have summated?
mustn't he have summated?
mustn't we have summated?
mustn't you have summated?
mustn't they have summated? 	mustn't I have been summating?
mustn't you have been summating?
mustn't he have been summating?
mustn't we have been summating?
mustn't you have been summating?
mustn't they have been summating?