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