could obtain
Verbo regular: obtain - obtained- obtained

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could obtain
you could obtain
she could obtain
we could obtain
you could obtain
they could obtain 	I could be obtaining
you could be obtaining
she could be obtaining
we could be obtaining
you could be obtaining
they could be obtaining	I could have obtained
you could have obtained
she could have obtained
we could have obtained
you could have obtained
they could have obtained	I could have been obtaining
you could have been obtaining
she could have been obtaining
we could have been obtaining
you could have been obtaining
they could have been obtaining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not obtain
you could not obtain
she could not obtain
we could not obtain
you could not obtain
they could not obtain 	I could not be obtaining
you could not be obtaining
she could not be obtaining
we could not be obtaining
you could not be obtaining
they could not be obtaining	I could not have obtained
you could not have obtained
she could not have obtained
we could not have obtained
you could not have obtained
they could not have obtained	I could not have been obtaining
you could not have been obtaining
she could not have been obtaining
we could not have been obtaining
you could not have been obtaining
they could not have been obtaining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I obtain?
could you obtain?
could she obtain?
could we obtain?
could you obtain?
could they obtain? 	could I be obtaining?
could you be obtaining?
could she be obtaining?
could we be obtaining?
could you be obtaining?
could they be obtaining? 	could I have obtained?
could you have obtained?
could she have obtained?
could we have obtained?
could you have obtained?
could they have obtained? 	could I have been obtaining?
could you have been obtaining?
could she have been obtaining?
could we have been obtaining?
could you have been obtaining?
could they have been obtaining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not obtain?
could you not obtain?
could she not obtain?
could we not obtain?
could you not obtain?
could they not obtain? 	could I not be obtaining?
could you not be obtaining?
could she not be obtaining?
could we not be obtaining?
could you not be obtaining?
could they not be obtaining? 	could I not have obtained?
could you not have obtained?
could she not have obtained?
could we not have obtained?
could you not have obtained?
could they not have obtained? 	could I not have been obtaining?
could you not have been obtaining?
could she not have been obtaining?
could we not have been obtaining?
could you not have been obtaining?
could they not have been obtaining?