can obscure
Verbe régulier : obscure - obscured- obscured

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

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I cannot obscure
you cannot obscure
he cannot obscure
we cannot obscure
you cannot obscure
they cannot obscure 	I cannot be obscuring
you cannot be obscuring
he cannot be obscuring
we cannot be obscuring
you cannot be obscuring
they cannot be obscuring	I cannot have obscured
you cannot have obscured
he cannot have obscured
we cannot have obscured
you cannot have obscured
they cannot have obscured	I cannot have been obscuring
you cannot have been obscuring
he cannot have been obscuring
we cannot have been obscuring
you cannot have been obscuring
they cannot have been obscuring	

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

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