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