could supplement
Verbe régulier : supplement - supplemented- supplemented
Traduction française : augmenter - compléter 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could supplement
you could supplement
she could supplement
we could supplement
you could supplement
they could supplement 	I could be supplementing
you could be supplementing
she could be supplementing
we could be supplementing
you could be supplementing
they could be supplementing	I could have supplemented
you could have supplemented
she could have supplemented
we could have supplemented
you could have supplemented
they could have supplemented	I could have been supplementing
you could have been supplementing
she could have been supplementing
we could have been supplementing
you could have been supplementing
they could have been supplementing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't supplement
you couldn't supplement
she couldn't supplement
we couldn't supplement
you couldn't supplement
they couldn't supplement 	I couldn't be supplementing
you couldn't be supplementing
she couldn't be supplementing
we couldn't be supplementing
you couldn't be supplementing
they couldn't be supplementing	I couldn't have supplemented
you couldn't have supplemented
she couldn't have supplemented
we couldn't have supplemented
you couldn't have supplemented
they couldn't have supplemented	I couldn't have been supplementing
you couldn't have been supplementing
she couldn't have been supplementing
we couldn't have been supplementing
you couldn't have been supplementing
they couldn't have been supplementing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I supplement?
could you supplement?
could she supplement?
could we supplement?
could you supplement?
could they supplement? 	could I be supplementing?
could you be supplementing?
could she be supplementing?
could we be supplementing?
could you be supplementing?
could they be supplementing? 	could I have supplemented?
could you have supplemented?
could she have supplemented?
could we have supplemented?
could you have supplemented?
could they have supplemented? 	could I have been supplementing?
could you have been supplementing?
could she have been supplementing?
could we have been supplementing?
could you have been supplementing?
could they have been supplementing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I supplement?
couldn't you supplement?
couldn't she supplement?
couldn't we supplement?
couldn't you supplement?
couldn't they supplement? 	couldn't I be supplementing?
couldn't you be supplementing?
couldn't she be supplementing?
couldn't we be supplementing?
couldn't you be supplementing?
couldn't they be supplementing? 	couldn't I have supplemented?
couldn't you have supplemented?
couldn't she have supplemented?
couldn't we have supplemented?
couldn't you have supplemented?
couldn't they have supplemented? 	couldn't I have been supplementing?
couldn't you have been supplementing?
couldn't she have been supplementing?
couldn't we have been supplementing?
couldn't you have been supplementing?
couldn't they have been supplementing?