I ought to certify you ought to certify he ought to certify we ought to certify you ought to certify they ought to certify
V-ing form
I ought to be certifying you ought to be certifying he ought to be certifying we ought to be certifying you ought to be certifying they ought to be certifying
Perfect
I ought to have certified you ought to have certified he ought to have certified we ought to have certified you ought to have certified they ought to have certified
V-ing perfect
I ought to have been certifying you ought to have been certifying he ought to have been certifying we ought to have been certifying you ought to have been certifying they ought to have been certifying
Negation
Simple form
I ought not to certify you ought not to certify he ought not to certify we ought not to certify you ought not to certify they ought not to certify
V-ing form
I ought not to certifying you ought not to certifying he ought not to certifying we ought not to certifying you ought not to certifying they ought not to certifying
Perfect
I ought not to have certified you ought not to have certified he ought not to have certified we ought not to have certified you ought not to have certified they ought not to have certified
V-ing perfect
I ought not to have been certifying you ought not to have been certifying he ought not to have been certifying we ought not to have been certifying you ought not to have been certifying they ought not to have been certifying
Interrogative form
Simple form
ought to I certify? ought to you certify? ought to he certify? ought to we certify? ought to you certify? ought to they certify?
V-ing form
ought to I be certifying? ought to you be certifying? ought to he be certifying? ought to we be certifying? ought to you be certifying? ought to they be certifying?
Perfect
ought to I have certified? ought to you have certified? ought to he have certified? ought to we have certified? ought to you have certified? ought to they have certified?
V-ing perfect
ought to I have been certifying? ought to you have been certifying? ought to he have been certifying? ought to we have been certifying? ought to you have been certifying? ought to they have been certifying?
Interro-negative form
Simple form
ought I not to certify? ought you not to certify? ought he not to certify? ought we not to certify? ought you not to certify? ought they not to certify?
V-ing form
ought I not to be certifying? ought you not to be certifying? ought he not to be certifying? ought we not to be certifying? ought you not to be certifying? ought they not to be certifying?
Perfect
ought I not to have certified? ought you not to have certified? ought he not to have certified? ought we not to have certified? ought you not to have certified? ought they not to have certified?
V-ing perfect
ought I not to have been certifying? ought you not to have been certifying? ought he not to have been certifying? ought we not to have been certifying? ought you not to have been certifying? ought they not to have been certifying?