I can shortchange you can shortchange he can shortchange we can shortchange you can shortchange they can shortchange
V-ing form
I can be shortchanging you can be shortchanging he can be shortchanging we can be shortchanging you can be shortchanging they can be shortchanging
Perfect
I can have shortchanged you can have shortchanged he can have shortchanged we can have shortchanged you can have shortchanged they can have shortchanged
V-ing perfect
I can have been shortchanging you can have been shortchanging he can have been shortchanging we can have been shortchanging you can have been shortchanging they can have been shortchanging
Negation
Simple form
I cannot shortchange you cannot shortchange he cannot shortchange we cannot shortchange you cannot shortchange they cannot shortchange
V-ing form
I cannot be shortchanging you cannot be shortchanging he cannot be shortchanging we cannot be shortchanging you cannot be shortchanging they cannot be shortchanging
Perfect
I cannot have shortchanged you cannot have shortchanged he cannot have shortchanged we cannot have shortchanged you cannot have shortchanged they cannot have shortchanged
V-ing perfect
I cannot have been shortchanging you cannot have been shortchanging he cannot have been shortchanging we cannot have been shortchanging you cannot have been shortchanging they cannot have been shortchanging
Interrogative form
Simple form
can I shortchange? can you shortchange? can he shortchange? can we shortchange? can you shortchange? can they shortchange?
V-ing form
can I be shortchanging? can you be shortchanging? can he be shortchanging? can we be shortchanging? can you be shortchanging? can they be shortchanging?
Perfect
can I have shortchanged? can you have shortchanged? can he have shortchanged? can we have shortchanged? can you have shortchanged? can they have shortchanged?
V-ing perfect
can I have been shortchanging? can you have been shortchanging? can he have been shortchanging? can we have been shortchanging? can you have been shortchanging? can they have been shortchanging?
Interro-negative form
Simple form
can I not shortchange? can you not shortchange? can he not shortchange? can we not shortchange? can you not shortchange? can they not shortchange?
V-ing form
can I not be shortchanging? can you not be shortchanging? can he not be shortchanging? can we not be shortchanging? can you not be shortchanging? can they not be shortchanging?
Perfect
can I not have shortchanged? can you not have shortchanged? can he not have shortchanged? can we not have shortchanged? can you not have shortchanged? can they not have shortchanged?
V-ing perfect
can I not have been shortchanging? can you not have been shortchanging? can he not have been shortchanging? can we not have been shortchanging? can you not have been shortchanging? can they not have been shortchanging?