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