can obscure
Verbo regular: obscure - obscured- obscured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can obscure
you can obscure
she can obscure
we can obscure
you can obscure
they can obscure 	I can be obscuring
you can be obscuring
she can be obscuring
we can be obscuring
you can be obscuring
they can be obscuring	I can have obscured
you can have obscured
she 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
she can have been obscuring
we can have been obscuring
you can have been obscuring
they can have been obscuring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot obscure
you cannot obscure
she cannot obscure
we cannot obscure
you cannot obscure
they cannot obscure 	I cannot be obscuring
you cannot be obscuring
she cannot be obscuring
we cannot be obscuring
you cannot be obscuring
they cannot be obscuring	I cannot have obscured
you cannot have obscured
she 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
she cannot have been obscuring
we cannot have been obscuring
you cannot have been obscuring
they cannot have been obscuring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I obscure?
can you obscure?
can she obscure?
can we obscure?
can you obscure?
can they obscure? 	can I be obscuring?
can you be obscuring?
can she be obscuring?
can we be obscuring?
can you be obscuring?
can they be obscuring? 	can I have obscured?
can you have obscured?
can she 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 she have been obscuring?
can we have been obscuring?
can you have been obscuring?
can they have been obscuring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not obscure?
can you not obscure?
can she 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 she 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 she 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 she not have been obscuring?
can we not have been obscuring?
can you not have been obscuring?
can they not have been obscuring?