I ought to contend you ought to contend she 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 she 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 she 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 she 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 ought not to contend you ought not to contend she ought not to contend we ought not to contend you ought not to contend they ought not to contend
V-ing form
I ought not to contending you ought not to contending she ought not to contending we ought not to contending you ought not to contending they ought not to contending
Perfect
I ought not to have contended you ought not to have contended she ought not to have contended we ought not to have contended you ought not to have contended they ought not to have contended
V-ing perfect
I ought not to have been contending you ought not to have been contending she ought not to have been contending we ought not to have been contending you ought not to have been contending they ought not to have been contending
Interrogative form
Simple form
ought to I contend? ought to you contend? ought to she 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 she 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 she 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 she 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
ought I not to contend? ought you not to contend? ought she not to contend? ought we not to contend? ought you not to contend? ought they not to contend?
V-ing form
ought I not to be contending? ought you not to be contending? ought she not to be contending? ought we not to be contending? ought you not to be contending? ought they not to be contending?
Perfect
ought I not to have contended? ought you not to have contended? ought she not to have contended? ought we not to have contended? ought you not to have contended? ought they not to have contended?
V-ing perfect
ought I not to have been contending? ought you not to have been contending? ought she not to have been contending? ought we not to have been contending? ought you not to have been contending? ought they not to have been contending?