I ought to blacken you ought to blacken she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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?