I ought to darken you ought to darken he ought to darken we ought to darken you ought to darken they ought to darken
V-ing form
I ought to be darkening you ought to be darkening he ought to be darkening we ought to be darkening you ought to be darkening they ought to be darkening
Perfect
I ought to have darkened you ought to have darkened he ought to have darkened we ought to have darkened you ought to have darkened they ought to have darkened
V-ing perfect
I ought to have been darkening you ought to have been darkening he ought to have been darkening we ought to have been darkening you ought to have been darkening they ought to have been darkening
Negation
Simple form
I oughtn't to darken you oughtn't to darken he oughtn't to darken we oughtn't to darken you oughtn't to darken they oughtn't to darken
V-ing form
I oughtn't to be darkening you oughtn't to be darkening he oughtn't to be darkening we oughtn't to be darkening you oughtn't to be darkening they oughtn't to be darkening
Perfect
I oughtn't to have darkened you oughtn't to have darkened he oughtn't to have darkened we oughtn't to have darkened you oughtn't to have darkened they oughtn't to have darkened
V-ing perfect
I oughtn't to have been darkening you oughtn't to have been darkening he oughtn't to have been darkening we oughtn't to have been darkening you oughtn't to have been darkening they oughtn't to have been darkening
Interrogative form
Simple form
ought to I darken? ought to you darken? ought to he darken? ought to we darken? ought to you darken? ought to they darken?
V-ing form
ought to I be darkening? ought to you be darkening? ought to he be darkening? ought to we be darkening? ought to you be darkening? ought to they be darkening?
Perfect
ought to I have darkened? ought to you have darkened? ought to he have darkened? ought to we have darkened? ought to you have darkened? ought to they have darkened?
V-ing perfect
ought to I have been darkening? ought to you have been darkening? ought to he have been darkening? ought to we have been darkening? ought to you have been darkening? ought to they have been darkening?
Interro-negative form
Simple form
oughtn't I to darken? oughtn't you to darken? oughtn't he to darken? oughtn't we to darken? oughtn't you to darken? oughtn't they to darken?
V-ing form
oughtn't I to be darkening? oughtn't you to be darkening? oughtn't he to be darkening? oughtn't we to be darkening? oughtn't you to be darkening? oughtn't they to be darkening?
Perfect
oughtn't I to have darkened? oughtn't you to have darkened? oughtn't he to have darkened? oughtn't we to have darkened? oughtn't you to have darkened? oughtn't they to have darkened?
V-ing perfect
oughtn't I to have been darkening? oughtn't you to have been darkening? oughtn't he to have been darkening? oughtn't we to have been darkening? oughtn't you to have been darkening? oughtn't they to have been darkening?