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