I ought to witness you ought to witness she ought to witness we ought to witness you ought to witness they ought to witness
V-ing form
I ought to be witnessing you ought to be witnessing she ought to be witnessing we ought to be witnessing you ought to be witnessing they ought to be witnessing
Perfect
I ought to have witnessed you ought to have witnessed she ought to have witnessed we ought to have witnessed you ought to have witnessed they ought to have witnessed
V-ing perfect
I ought to have been witnessing you ought to have been witnessing she ought to have been witnessing we ought to have been witnessing you ought to have been witnessing they ought to have been witnessing
Negation
Simple form
I ought not to witness you ought not to witness she ought not to witness we ought not to witness you ought not to witness they ought not to witness
V-ing form
I ought not to witnessing you ought not to witnessing she ought not to witnessing we ought not to witnessing you ought not to witnessing they ought not to witnessing
Perfect
I ought not to have witnessed you ought not to have witnessed she ought not to have witnessed we ought not to have witnessed you ought not to have witnessed they ought not to have witnessed
V-ing perfect
I ought not to have been witnessing you ought not to have been witnessing she ought not to have been witnessing we ought not to have been witnessing you ought not to have been witnessing they ought not to have been witnessing
Interrogative form
Simple form
ought to I witness? ought to you witness? ought to she witness? ought to we witness? ought to you witness? ought to they witness?
V-ing form
ought to I be witnessing? ought to you be witnessing? ought to she be witnessing? ought to we be witnessing? ought to you be witnessing? ought to they be witnessing?
Perfect
ought to I have witnessed? ought to you have witnessed? ought to she have witnessed? ought to we have witnessed? ought to you have witnessed? ought to they have witnessed?
V-ing perfect
ought to I have been witnessing? ought to you have been witnessing? ought to she have been witnessing? ought to we have been witnessing? ought to you have been witnessing? ought to they have been witnessing?
Interro-negative form
Simple form
ought I not to witness? ought you not to witness? ought she not to witness? ought we not to witness? ought you not to witness? ought they not to witness?
V-ing form
ought I not to be witnessing? ought you not to be witnessing? ought she not to be witnessing? ought we not to be witnessing? ought you not to be witnessing? ought they not to be witnessing?
Perfect
ought I not to have witnessed? ought you not to have witnessed? ought she not to have witnessed? ought we not to have witnessed? ought you not to have witnessed? ought they not to have witnessed?
V-ing perfect
ought I not to have been witnessing? ought you not to have been witnessing? ought she not to have been witnessing? ought we not to have been witnessing? ought you not to have been witnessing? ought they not to have been witnessing?