can summate
Regular verb: summate - summated- summated

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

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

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

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