can obtain
Regular verb: obtain - obtained- obtained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can obtain
you can obtain
he can obtain
we can obtain
you can obtain
they can obtain 	I can be obtaining
you can be obtaining
he can be obtaining
we can be obtaining
you can be obtaining
they can be obtaining	I can have obtained
you can have obtained
he can have obtained
we can have obtained
you can have obtained
they can have obtained	I can have been obtaining
you can have been obtaining
he can have been obtaining
we can have been obtaining
you can have been obtaining
they can have been obtaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't obtain
you can't obtain
he can't obtain
we can't obtain
you can't obtain
they can't obtain 	I can't be obtaining
you can't be obtaining
he can't be obtaining
we can't be obtaining
you can't be obtaining
they can't be obtaining	I can't have obtained
you can't have obtained
he can't have obtained
we can't have obtained
you can't have obtained
they can't have obtained	I can't have been obtaining
you can't have been obtaining
he can't have been obtaining
we can't have been obtaining
you can't have been obtaining
they can't have been obtaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I obtain?
can you obtain?
can he obtain?
can we obtain?
can you obtain?
can they obtain? 	can I be obtaining?
can you be obtaining?
can he be obtaining?
can we be obtaining?
can you be obtaining?
can they be obtaining? 	can I have obtained?
can you have obtained?
can he have obtained?
can we have obtained?
can you have obtained?
can they have obtained? 	can I have been obtaining?
can you have been obtaining?
can he have been obtaining?
can we have been obtaining?
can you have been obtaining?
can they have been obtaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I obtain?
can't you obtain?
can't he obtain?
can't we obtain?
can't you obtain?
can't they obtain? 	can't I be obtaining?
can't you be obtaining?
can't he be obtaining?
can't we be obtaining?
can't you be obtaining?
can't they be obtaining? 	can't I have obtained?
can't you have obtained?
can't he have obtained?
can't we have obtained?
can't you have obtained?
can't they have obtained? 	can't I have been obtaining?
can't you have been obtaining?
can't he have been obtaining?
can't we have been obtaining?
can't you have been obtaining?
can't they have been obtaining?