could obscure
Verbe régulier : obscure - obscured- obscured

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could obscure
you could obscure
she could obscure
we could obscure
you could obscure
they could obscure 	I could be obscuring
you could be obscuring
she could be obscuring
we could be obscuring
you could be obscuring
they could be obscuring	I could have obscured
you could have obscured
she could have obscured
we could have obscured
you could have obscured
they could have obscured	I could have been obscuring
you could have been obscuring
she could have been obscuring
we could have been obscuring
you could have been obscuring
they could have been obscuring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not obscure
you could not obscure
she could not obscure
we could not obscure
you could not obscure
they could not obscure 	I could not be obscuring
you could not be obscuring
she could not be obscuring
we could not be obscuring
you could not be obscuring
they could not be obscuring	I could not have obscured
you could not have obscured
she could not have obscured
we could not have obscured
you could not have obscured
they could not have obscured	I could not have been obscuring
you could not have been obscuring
she could not have been obscuring
we could not have been obscuring
you could not have been obscuring
they could not have been obscuring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I obscure?
could you obscure?
could she obscure?
could we obscure?
could you obscure?
could they obscure? 	could I be obscuring?
could you be obscuring?
could she be obscuring?
could we be obscuring?
could you be obscuring?
could they be obscuring? 	could I have obscured?
could you have obscured?
could she have obscured?
could we have obscured?
could you have obscured?
could they have obscured? 	could I have been obscuring?
could you have been obscuring?
could she have been obscuring?
could we have been obscuring?
could you have been obscuring?
could they have been obscuring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not obscure?
could you not obscure?
could she not obscure?
could we not obscure?
could you not obscure?
could they not obscure? 	could I not be obscuring?
could you not be obscuring?
could she not be obscuring?
could we not be obscuring?
could you not be obscuring?
could they not be obscuring? 	could I not have obscured?
could you not have obscured?
could she not have obscured?
could we not have obscured?
could you not have obscured?
could they not have obscured? 	could I not have been obscuring?
could you not have been obscuring?
could she not have been obscuring?
could we not have been obscuring?
could you not have been obscuring?
could they not have been obscuring?