ought to obtain
Regular verb: obtain - obtained- obtained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to obtain
you ought to obtain
she ought to obtain
we ought to obtain
you ought to obtain
they ought to obtain 	I ought to be obtaining
you ought to be obtaining
she ought to be obtaining
we ought to be obtaining
you ought to be obtaining
they ought to be obtaining	I ought to have obtained
you ought to have obtained
she ought to have obtained
we ought to have obtained
you ought to have obtained
they ought to have obtained	I ought to have been obtaining
you ought to have been obtaining
she ought to have been obtaining
we ought to have been obtaining
you ought to have been obtaining
they ought to have been obtaining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to obtain
you ought not to obtain
she ought not to obtain
we ought not to obtain
you ought not to obtain
they ought not to obtain 	I ought not to obtaining
you ought not to obtaining
she ought not to obtaining
we ought not to obtaining
you ought not to obtaining
they ought not to obtaining	I ought not to have obtained
you ought not to have obtained
she ought not to have obtained
we ought not to have obtained
you ought not to have obtained
they ought not to have obtained	I ought not to have been obtaining
you ought not to have been obtaining
she ought not to have been obtaining
we ought not to have been obtaining
you ought not to have been obtaining
they ought not to have been obtaining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I obtain?
ought to you obtain?
ought to she obtain?
ought to we obtain?
ought to you obtain?
ought to they obtain? 	ought to I be obtaining?
ought to you be obtaining?
ought to she be obtaining?
ought to we be obtaining?
ought to you be obtaining?
ought to they be obtaining? 	ought to I have obtained?
ought to you have obtained?
ought to she have obtained?
ought to we have obtained?
ought to you have obtained?
ought to they have obtained? 	ought to I have been obtaining?
ought to you have been obtaining?
ought to she have been obtaining?
ought to we have been obtaining?
ought to you have been obtaining?
ought to they have been obtaining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to obtain?
ought you not to obtain?
ought she not to obtain?
ought we not to obtain?
ought you not to obtain?
ought they not to obtain? 	ought I not to be obtaining?
ought you not to be obtaining?
ought she not to be obtaining?
ought we not to be obtaining?
ought you not to be obtaining?
ought they not to be obtaining? 	ought I not to have obtained?
ought you not to have obtained?
ought she not to have obtained?
ought we not to have obtained?
ought you not to have obtained?
ought they not to have obtained? 	ought I not to have been obtaining?
ought you not to have been obtaining?
ought she not to have been obtaining?
ought we not to have been obtaining?
ought you not to have been obtaining?
ought they not to have been obtaining?