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 ought not to crumble you ought not to crumble he ought not to crumble we ought not to crumble you ought not to crumble they ought not to crumble
V-ing form
I ought not to crumbling you ought not to crumbling he ought not to crumbling we ought not to crumbling you ought not to crumbling they ought not to crumbling
Perfect
I ought not to have crumbled you ought not to have crumbled he ought not to have crumbled we ought not to have crumbled you ought not to have crumbled they ought not to have crumbled
V-ing perfect
I ought not to have been crumbling you ought not to have been crumbling he ought not to have been crumbling we ought not to have been crumbling you ought not to have been crumbling they ought not 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
ought I not to crumble? ought you not to crumble? ought he not to crumble? ought we not to crumble? ought you not to crumble? ought they not to crumble?
V-ing form
ought I not to be crumbling? ought you not to be crumbling? ought he not to be crumbling? ought we not to be crumbling? ought you not to be crumbling? ought they not to be crumbling?
Perfect
ought I not to have crumbled? ought you not to have crumbled? ought he not to have crumbled? ought we not to have crumbled? ought you not to have crumbled? ought they not to have crumbled?
V-ing perfect
ought I not to have been crumbling? ought you not to have been crumbling? ought he not to have been crumbling? ought we not to have been crumbling? ought you not to have been crumbling? ought they not to have been crumbling?