can concur
Verbe régulier : concur - concurred- concurred
Traduction française : être d'accord - coïncider 

Affirmation 	
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I can concur
you can concur
he can concur
we can concur
you can concur
they can concur 	I can be concurring
you can be concurring
he can be concurring
we can be concurring
you can be concurring
they can be concurring	I can have concurred
you can have concurred
he can have concurred
we can have concurred
you can have concurred
they can have concurred	I can have been concurring
you can have been concurring
he can have been concurring
we can have been concurring
you can have been concurring
they can have been concurring	

Négation 	
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I can't concur
you can't concur
he can't concur
we can't concur
you can't concur
they can't concur 	I can't be concurring
you can't be concurring
he can't be concurring
we can't be concurring
you can't be concurring
they can't be concurring	I can't have concurred
you can't have concurred
he can't have concurred
we can't have concurred
you can't have concurred
they can't have concurred	I can't have been concurring
you can't have been concurring
he can't have been concurring
we can't have been concurring
you can't have been concurring
they can't have been concurring	

Forme interrogative 	
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can I concur?
can you concur?
can he concur?
can we concur?
can you concur?
can they concur? 	can I be concurring?
can you be concurring?
can he be concurring?
can we be concurring?
can you be concurring?
can they be concurring? 	can I have concurred?
can you have concurred?
can he have concurred?
can we have concurred?
can you have concurred?
can they have concurred? 	can I have been concurring?
can you have been concurring?
can he have been concurring?
can we have been concurring?
can you have been concurring?
can they have been concurring? 	

Forme interro-négative 	
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can't I concur?
can't you concur?
can't he concur?
can't we concur?
can't you concur?
can't they concur? 	can't I be concurring?
can't you be concurring?
can't he be concurring?
can't we be concurring?
can't you be concurring?
can't they be concurring? 	can't I have concurred?
can't you have concurred?
can't he have concurred?
can't we have concurred?
can't you have concurred?
can't they have concurred? 	can't I have been concurring?
can't you have been concurring?
can't he have been concurring?
can't we have been concurring?
can't you have been concurring?
can't they have been concurring?