I ought to presterilise you ought to presterilise he ought to presterilise we ought to presterilise you ought to presterilise they ought to presterilise
V-ing form
I ought to be presterilising you ought to be presterilising he ought to be presterilising we ought to be presterilising you ought to be presterilising they ought to be presterilising
Perfect
I ought to have presterilised you ought to have presterilised he ought to have presterilised we ought to have presterilised you ought to have presterilised they ought to have presterilised
V-ing perfect
I ought to have been presterilising you ought to have been presterilising he ought to have been presterilising we ought to have been presterilising you ought to have been presterilising they ought to have been presterilising
Negation
Simple form
I ought not to presterilise you ought not to presterilise he ought not to presterilise we ought not to presterilise you ought not to presterilise they ought not to presterilise
V-ing form
I ought not to presterilising you ought not to presterilising he ought not to presterilising we ought not to presterilising you ought not to presterilising they ought not to presterilising
Perfect
I ought not to have presterilised you ought not to have presterilised he ought not to have presterilised we ought not to have presterilised you ought not to have presterilised they ought not to have presterilised
V-ing perfect
I ought not to have been presterilising you ought not to have been presterilising he ought not to have been presterilising we ought not to have been presterilising you ought not to have been presterilising they ought not to have been presterilising
Interrogative form
Simple form
ought to I presterilise? ought to you presterilise? ought to he presterilise? ought to we presterilise? ought to you presterilise? ought to they presterilise?
V-ing form
ought to I be presterilising? ought to you be presterilising? ought to he be presterilising? ought to we be presterilising? ought to you be presterilising? ought to they be presterilising?
Perfect
ought to I have presterilised? ought to you have presterilised? ought to he have presterilised? ought to we have presterilised? ought to you have presterilised? ought to they have presterilised?
V-ing perfect
ought to I have been presterilising? ought to you have been presterilising? ought to he have been presterilising? ought to we have been presterilising? ought to you have been presterilising? ought to they have been presterilising?
Interro-negative form
Simple form
ought I not to presterilise? ought you not to presterilise? ought he not to presterilise? ought we not to presterilise? ought you not to presterilise? ought they not to presterilise?
V-ing form
ought I not to be presterilising? ought you not to be presterilising? ought he not to be presterilising? ought we not to be presterilising? ought you not to be presterilising? ought they not to be presterilising?
Perfect
ought I not to have presterilised? ought you not to have presterilised? ought he not to have presterilised? ought we not to have presterilised? ought you not to have presterilised? ought they not to have presterilised?
V-ing perfect
ought I not to have been presterilising? ought you not to have been presterilising? ought he not to have been presterilising? ought we not to have been presterilising? ought you not to have been presterilising? ought they not to have been presterilising?