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