I ought to certify you ought to certify she 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 she 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 she 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 she 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 oughtn't to certify you oughtn't to certify she oughtn't to certify we oughtn't to certify you oughtn't to certify they oughtn't to certify
V-ing form
I oughtn't to be certifying you oughtn't to be certifying she oughtn't to be certifying we oughtn't to be certifying you oughtn't to be certifying they oughtn't to be certifying
Perfect
I oughtn't to have certified you oughtn't to have certified she oughtn't to have certified we oughtn't to have certified you oughtn't to have certified they oughtn't to have certified
V-ing perfect
I oughtn't to have been certifying you oughtn't to have been certifying she oughtn't to have been certifying we oughtn't to have been certifying you oughtn't to have been certifying they oughtn't to have been certifying
Interrogative form
Simple form
ought to I certify? ought to you certify? ought to she 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 she 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 she 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 she 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
oughtn't I to certify? oughtn't you to certify? oughtn't she to certify? oughtn't we to certify? oughtn't you to certify? oughtn't they to certify?
V-ing form
oughtn't I to be certifying? oughtn't you to be certifying? oughtn't she to be certifying? oughtn't we to be certifying? oughtn't you to be certifying? oughtn't they to be certifying?
Perfect
oughtn't I to have certified? oughtn't you to have certified? oughtn't she to have certified? oughtn't we to have certified? oughtn't you to have certified? oughtn't they to have certified?
V-ing perfect
oughtn't I to have been certifying? oughtn't you to have been certifying? oughtn't she to have been certifying? oughtn't we to have been certifying? oughtn't you to have been certifying? oughtn't they to have been certifying?