Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I ought to contend contend you ought to contend contend he ought to contend contend we ought to contend contend you ought to contend contend they ought to contend contend
V-ing form
I ought to be contend contending you ought to be contend contending he ought to be contend contending we ought to be contend contending you ought to be contend contending they ought to be contend contending
Perfect
I ought to have contend contended you ought to have contend contended he ought to have contend contended we ought to have contend contended you ought to have contend contended they ought to have contend contended
V-ing perfect
I ought to have been contend contending you ought to have been contend contending he ought to have been contend contending we ought to have been contend contending you ought to have been contend contending they ought to have been contend contending
Negation
Simple form
I ought not to contend contend you ought not to contend contend he ought not to contend contend we ought not to contend contend you ought not to contend contend they ought not to contend contend
V-ing form
I ought not to contend contending you ought not to contend contending he ought not to contend contending we ought not to contend contending you ought not to contend contending they ought not to contend contending
Perfect
I ought not to have contend contended you ought not to have contend contended he ought not to have contend contended we ought not to have contend contended you ought not to have contend contended they ought not to have contend contended
V-ing perfect
I ought not to have been contend contending you ought not to have been contend contending he ought not to have been contend contending we ought not to have been contend contending you ought not to have been contend contending they ought not to have been contend contending
Interrogative form
Simple form
ought to I contend contend? ought to you contend contend? ought to he contend contend? ought to we contend contend? ought to you contend contend? ought to they contend contend?
V-ing form
ought to I be contend contending? ought to you be contend contending? ought to he be contend contending? ought to we be contend contending? ought to you be contend contending? ought to they be contend contending?
Perfect
ought to I have contend contended? ought to you have contend contended? ought to he have contend contended? ought to we have contend contended? ought to you have contend contended? ought to they have contend contended?
V-ing perfect
ought to I have been contend contending? ought to you have been contend contending? ought to he have been contend contending? ought to we have been contend contending? ought to you have been contend contending? ought to they have been contend contending?
Interro-negative form
Simple form
ought I not to contend contend? ought you not to contend contend? ought he not to contend contend? ought we not to contend contend? ought you not to contend contend? ought they not to contend contend?
V-ing form
ought I not to be contend contending? ought you not to be contend contending? ought he not to be contend contending? ought we not to be contend contending? ought you not to be contend contending? ought they not to be contend contending?
Perfect
ought I not to have contend contended? ought you not to have contend contended? ought he not to have contend contended? ought we not to have contend contended? ought you not to have contend contended? ought they not to have contend contended?
V-ing perfect
ought I not to have been contend contending? ought you not to have been contend contending? ought he not to have been contend contending? ought we not to have been contend contending? ought you not to have been contend contending? ought they not to have been contend contending?