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