I ought to obscure you ought to obscure she ought to obscure we ought to obscure you ought to obscure they ought to obscure
V-ing form
I ought to be obscuring you ought to be obscuring she ought to be obscuring we ought to be obscuring you ought to be obscuring they ought to be obscuring
Perfect
I ought to have obscured you ought to have obscured she ought to have obscured we ought to have obscured you ought to have obscured they ought to have obscured
V-ing perfect
I ought to have been obscuring you ought to have been obscuring she ought to have been obscuring we ought to have been obscuring you ought to have been obscuring they ought to have been obscuring
Negation
Simple form
I oughtn't to obscure you oughtn't to obscure she oughtn't to obscure we oughtn't to obscure you oughtn't to obscure they oughtn't to obscure
V-ing form
I oughtn't to be obscuring you oughtn't to be obscuring she oughtn't to be obscuring we oughtn't to be obscuring you oughtn't to be obscuring they oughtn't to be obscuring
Perfect
I oughtn't to have obscured you oughtn't to have obscured she oughtn't to have obscured we oughtn't to have obscured you oughtn't to have obscured they oughtn't to have obscured
V-ing perfect
I oughtn't to have been obscuring you oughtn't to have been obscuring she oughtn't to have been obscuring we oughtn't to have been obscuring you oughtn't to have been obscuring they oughtn't to have been obscuring
Interrogative form
Simple form
ought to I obscure? ought to you obscure? ought to she obscure? ought to we obscure? ought to you obscure? ought to they obscure?
V-ing form
ought to I be obscuring? ought to you be obscuring? ought to she be obscuring? ought to we be obscuring? ought to you be obscuring? ought to they be obscuring?
Perfect
ought to I have obscured? ought to you have obscured? ought to she have obscured? ought to we have obscured? ought to you have obscured? ought to they have obscured?
V-ing perfect
ought to I have been obscuring? ought to you have been obscuring? ought to she have been obscuring? ought to we have been obscuring? ought to you have been obscuring? ought to they have been obscuring?
Interro-negative form
Simple form
oughtn't I to obscure? oughtn't you to obscure? oughtn't she to obscure? oughtn't we to obscure? oughtn't you to obscure? oughtn't they to obscure?
V-ing form
oughtn't I to be obscuring? oughtn't you to be obscuring? oughtn't she to be obscuring? oughtn't we to be obscuring? oughtn't you to be obscuring? oughtn't they to be obscuring?
Perfect
oughtn't I to have obscured? oughtn't you to have obscured? oughtn't she to have obscured? oughtn't we to have obscured? oughtn't you to have obscured? oughtn't they to have obscured?
V-ing perfect
oughtn't I to have been obscuring? oughtn't you to have been obscuring? oughtn't she to have been obscuring? oughtn't we to have been obscuring? oughtn't you to have been obscuring? oughtn't they to have been obscuring?