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