I ought to stiffen you ought to stiffen he ought to stiffen we ought to stiffen you ought to stiffen they ought to stiffen
V-ing form
I ought to be stiffening you ought to be stiffening he ought to be stiffening we ought to be stiffening you ought to be stiffening they ought to be stiffening
Perfect
I ought to have stiffened you ought to have stiffened he ought to have stiffened we ought to have stiffened you ought to have stiffened they ought to have stiffened
V-ing perfect
I ought to have been stiffening you ought to have been stiffening he ought to have been stiffening we ought to have been stiffening you ought to have been stiffening they ought to have been stiffening
Negation
Simple form
I ought not to stiffen you ought not to stiffen he ought not to stiffen we ought not to stiffen you ought not to stiffen they ought not to stiffen
V-ing form
I ought not to stiffening you ought not to stiffening he ought not to stiffening we ought not to stiffening you ought not to stiffening they ought not to stiffening
Perfect
I ought not to have stiffened you ought not to have stiffened he ought not to have stiffened we ought not to have stiffened you ought not to have stiffened they ought not to have stiffened
V-ing perfect
I ought not to have been stiffening you ought not to have been stiffening he ought not to have been stiffening we ought not to have been stiffening you ought not to have been stiffening they ought not to have been stiffening
Interrogative form
Simple form
ought to I stiffen? ought to you stiffen? ought to he stiffen? ought to we stiffen? ought to you stiffen? ought to they stiffen?
V-ing form
ought to I be stiffening? ought to you be stiffening? ought to he be stiffening? ought to we be stiffening? ought to you be stiffening? ought to they be stiffening?
Perfect
ought to I have stiffened? ought to you have stiffened? ought to he have stiffened? ought to we have stiffened? ought to you have stiffened? ought to they have stiffened?
V-ing perfect
ought to I have been stiffening? ought to you have been stiffening? ought to he have been stiffening? ought to we have been stiffening? ought to you have been stiffening? ought to they have been stiffening?
Interro-negative form
Simple form
ought I not to stiffen? ought you not to stiffen? ought he not to stiffen? ought we not to stiffen? ought you not to stiffen? ought they not to stiffen?
V-ing form
ought I not to be stiffening? ought you not to be stiffening? ought he not to be stiffening? ought we not to be stiffening? ought you not to be stiffening? ought they not to be stiffening?
Perfect
ought I not to have stiffened? ought you not to have stiffened? ought he not to have stiffened? ought we not to have stiffened? ought you not to have stiffened? ought they not to have stiffened?
V-ing perfect
ought I not to have been stiffening? ought you not to have been stiffening? ought he not to have been stiffening? ought we not to have been stiffening? ought you not to have been stiffening? ought they not to have been stiffening?