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