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