I ought to commemorate you ought to commemorate she ought to commemorate we ought to commemorate you ought to commemorate they ought to commemorate
V-ing form
I ought to be commemorating you ought to be commemorating she ought to be commemorating we ought to be commemorating you ought to be commemorating they ought to be commemorating
Perfect
I ought to have commemorated you ought to have commemorated she ought to have commemorated we ought to have commemorated you ought to have commemorated they ought to have commemorated
V-ing perfect
I ought to have been commemorating you ought to have been commemorating she ought to have been commemorating we ought to have been commemorating you ought to have been commemorating they ought to have been commemorating
Negation
Simple form
I oughtn't to commemorate you oughtn't to commemorate she oughtn't to commemorate we oughtn't to commemorate you oughtn't to commemorate they oughtn't to commemorate
V-ing form
I oughtn't to be commemorating you oughtn't to be commemorating she oughtn't to be commemorating we oughtn't to be commemorating you oughtn't to be commemorating they oughtn't to be commemorating
Perfect
I oughtn't to have commemorated you oughtn't to have commemorated she oughtn't to have commemorated we oughtn't to have commemorated you oughtn't to have commemorated they oughtn't to have commemorated
V-ing perfect
I oughtn't to have been commemorating you oughtn't to have been commemorating she oughtn't to have been commemorating we oughtn't to have been commemorating you oughtn't to have been commemorating they oughtn't to have been commemorating
Interrogative form
Simple form
ought to I commemorate? ought to you commemorate? ought to she commemorate? ought to we commemorate? ought to you commemorate? ought to they commemorate?
V-ing form
ought to I be commemorating? ought to you be commemorating? ought to she be commemorating? ought to we be commemorating? ought to you be commemorating? ought to they be commemorating?
Perfect
ought to I have commemorated? ought to you have commemorated? ought to she have commemorated? ought to we have commemorated? ought to you have commemorated? ought to they have commemorated?
V-ing perfect
ought to I have been commemorating? ought to you have been commemorating? ought to she have been commemorating? ought to we have been commemorating? ought to you have been commemorating? ought to they have been commemorating?
Interro-negative form
Simple form
oughtn't I to commemorate? oughtn't you to commemorate? oughtn't she to commemorate? oughtn't we to commemorate? oughtn't you to commemorate? oughtn't they to commemorate?
V-ing form
oughtn't I to be commemorating? oughtn't you to be commemorating? oughtn't she to be commemorating? oughtn't we to be commemorating? oughtn't you to be commemorating? oughtn't they to be commemorating?
Perfect
oughtn't I to have commemorated? oughtn't you to have commemorated? oughtn't she to have commemorated? oughtn't we to have commemorated? oughtn't you to have commemorated? oughtn't they to have commemorated?
V-ing perfect
oughtn't I to have been commemorating? oughtn't you to have been commemorating? oughtn't she to have been commemorating? oughtn't we to have been commemorating? oughtn't you to have been commemorating? oughtn't they to have been commemorating?