I ought to witness you ought to witness she ought to witness we ought to witness you ought to witness they ought to witness
V-ing form
I ought to be witnessing you ought to be witnessing she ought to be witnessing we ought to be witnessing you ought to be witnessing they ought to be witnessing
Perfect
I ought to have witnessed you ought to have witnessed she ought to have witnessed we ought to have witnessed you ought to have witnessed they ought to have witnessed
V-ing perfect
I ought to have been witnessing you ought to have been witnessing she ought to have been witnessing we ought to have been witnessing you ought to have been witnessing they ought to have been witnessing
Negation
Simple form
I oughtn't to witness you oughtn't to witness she oughtn't to witness we oughtn't to witness you oughtn't to witness they oughtn't to witness
V-ing form
I oughtn't to be witnessing you oughtn't to be witnessing she oughtn't to be witnessing we oughtn't to be witnessing you oughtn't to be witnessing they oughtn't to be witnessing
Perfect
I oughtn't to have witnessed you oughtn't to have witnessed she oughtn't to have witnessed we oughtn't to have witnessed you oughtn't to have witnessed they oughtn't to have witnessed
V-ing perfect
I oughtn't to have been witnessing you oughtn't to have been witnessing she oughtn't to have been witnessing we oughtn't to have been witnessing you oughtn't to have been witnessing they oughtn't to have been witnessing
Interrogative form
Simple form
ought to I witness? ought to you witness? ought to she witness? ought to we witness? ought to you witness? ought to they witness?
V-ing form
ought to I be witnessing? ought to you be witnessing? ought to she be witnessing? ought to we be witnessing? ought to you be witnessing? ought to they be witnessing?
Perfect
ought to I have witnessed? ought to you have witnessed? ought to she have witnessed? ought to we have witnessed? ought to you have witnessed? ought to they have witnessed?
V-ing perfect
ought to I have been witnessing? ought to you have been witnessing? ought to she have been witnessing? ought to we have been witnessing? ought to you have been witnessing? ought to they have been witnessing?
Interro-negative form
Simple form
oughtn't I to witness? oughtn't you to witness? oughtn't she to witness? oughtn't we to witness? oughtn't you to witness? oughtn't they to witness?
V-ing form
oughtn't I to be witnessing? oughtn't you to be witnessing? oughtn't she to be witnessing? oughtn't we to be witnessing? oughtn't you to be witnessing? oughtn't they to be witnessing?
Perfect
oughtn't I to have witnessed? oughtn't you to have witnessed? oughtn't she to have witnessed? oughtn't we to have witnessed? oughtn't you to have witnessed? oughtn't they to have witnessed?
V-ing perfect
oughtn't I to have been witnessing? oughtn't you to have been witnessing? oughtn't she to have been witnessing? oughtn't we to have been witnessing? oughtn't you to have been witnessing? oughtn't they to have been witnessing?