could summate
Verbe régulier : summate - summated- summated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could summate
you could summate
she could summate
we could summate
you could summate
they could summate 	I could be summating
you could be summating
she could be summating
we could be summating
you could be summating
they could be summating	I could have summated
you could have summated
she could have summated
we could have summated
you could have summated
they could have summated	I could have been summating
you could have been summating
she could have been summating
we could have been summating
you could have been summating
they could have been summating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't summate
you couldn't summate
she couldn't summate
we couldn't summate
you couldn't summate
they couldn't summate 	I couldn't be summating
you couldn't be summating
she couldn't be summating
we couldn't be summating
you couldn't be summating
they couldn't be summating	I couldn't have summated
you couldn't have summated
she couldn't have summated
we couldn't have summated
you couldn't have summated
they couldn't have summated	I couldn't have been summating
you couldn't have been summating
she couldn't have been summating
we couldn't have been summating
you couldn't have been summating
they couldn't have been summating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I summate?
could you summate?
could she summate?
could we summate?
could you summate?
could they summate? 	could I be summating?
could you be summating?
could she be summating?
could we be summating?
could you be summating?
could they be summating? 	could I have summated?
could you have summated?
could she have summated?
could we have summated?
could you have summated?
could they have summated? 	could I have been summating?
could you have been summating?
could she have been summating?
could we have been summating?
could you have been summating?
could they have been summating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I summate?
couldn't you summate?
couldn't she summate?
couldn't we summate?
couldn't you summate?
couldn't they summate? 	couldn't I be summating?
couldn't you be summating?
couldn't she be summating?
couldn't we be summating?
couldn't you be summating?
couldn't they be summating? 	couldn't I have summated?
couldn't you have summated?
couldn't she have summated?
couldn't we have summated?
couldn't you have summated?
couldn't they have summated? 	couldn't I have been summating?
couldn't you have been summating?
couldn't she have been summating?
couldn't we have been summating?
couldn't you have been summating?
couldn't they have been summating?