must summate
Regular verb: summate - summated- summated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must summate
you must summate
she must summate
we must summate
you must summate
they must summate 	I must be summating
you must be summating
she must be summating
we must be summating
you must be summating
they must be summating	I must have summated
you must have summated
she 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
she must have been summating
we must have been summating
you must have been summating
they must have been summating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't summate
you mustn't summate
she 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
she 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
she 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
she mustn't have been summating
we mustn't have been summating
you mustn't have been summating
they mustn't have been summating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I summate?
must you summate?
must she summate?
must we summate?
must you summate?
must they summate? 	must I be summating?
must you be summating?
must she be summating?
must we be summating?
must you be summating?
must they be summating? 	must I have summated?
must you have summated?
must she 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 she have been summating?
must we have been summating?
must you have been summating?
must they have been summating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I summate?
mustn't you summate?
mustn't she 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 she 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 she 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 she have been summating?
mustn't we have been summating?
mustn't you have been summating?
mustn't they have been summating?