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