could refute
Verbe régulier : refute - refuted- refuted
Traduction française : réfuter - nier 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could refute
you could refute
she could refute
we could refute
you could refute
they could refute 	I could be refuting
you could be refuting
she could be refuting
we could be refuting
you could be refuting
they could be refuting	I could have refuted
you could have refuted
she could have refuted
we could have refuted
you could have refuted
they could have refuted	I could have been refuting
you could have been refuting
she could have been refuting
we could have been refuting
you could have been refuting
they could have been refuting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't refute
you couldn't refute
she couldn't refute
we couldn't refute
you couldn't refute
they couldn't refute 	I couldn't be refuting
you couldn't be refuting
she couldn't be refuting
we couldn't be refuting
you couldn't be refuting
they couldn't be refuting	I couldn't have refuted
you couldn't have refuted
she couldn't have refuted
we couldn't have refuted
you couldn't have refuted
they couldn't have refuted	I couldn't have been refuting
you couldn't have been refuting
she couldn't have been refuting
we couldn't have been refuting
you couldn't have been refuting
they couldn't have been refuting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I refute?
could you refute?
could she refute?
could we refute?
could you refute?
could they refute? 	could I be refuting?
could you be refuting?
could she be refuting?
could we be refuting?
could you be refuting?
could they be refuting? 	could I have refuted?
could you have refuted?
could she have refuted?
could we have refuted?
could you have refuted?
could they have refuted? 	could I have been refuting?
could you have been refuting?
could she have been refuting?
could we have been refuting?
could you have been refuting?
could they have been refuting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I refute?
couldn't you refute?
couldn't she refute?
couldn't we refute?
couldn't you refute?
couldn't they refute? 	couldn't I be refuting?
couldn't you be refuting?
couldn't she be refuting?
couldn't we be refuting?
couldn't you be refuting?
couldn't they be refuting? 	couldn't I have refuted?
couldn't you have refuted?
couldn't she have refuted?
couldn't we have refuted?
couldn't you have refuted?
couldn't they have refuted? 	couldn't I have been refuting?
couldn't you have been refuting?
couldn't she have been refuting?
couldn't we have been refuting?
couldn't you have been refuting?
couldn't they have been refuting?