English verb conjugation
COULD SHORTCHANGE

Regular verb: shortchange - shortchanged - shortchanged

Affirmation

Simple form	V-ing form
I could shortchange you could shortchange she could shortchange we could shortchange you could shortchange they could shortchange	I could be shortchanging you could be shortchanging she could be shortchanging we could be shortchanging you could be shortchanging they could be shortchanging
Perfect	V-ing perfect
I could have shortchanged you could have shortchanged she could have shortchanged we could have shortchanged you could have shortchanged they could have shortchanged	I could have been shortchanging you could have been shortchanging she could have been shortchanging we could have been shortchanging you could have been shortchanging they could have been shortchanging

Negation

Simple form	V-ing form
I couldn't shortchange you couldn't shortchange she couldn't shortchange we couldn't shortchange you couldn't shortchange they couldn't shortchange	I couldn't be shortchanging you couldn't be shortchanging she couldn't be shortchanging we couldn't be shortchanging you couldn't be shortchanging they couldn't be shortchanging
Perfect	V-ing perfect
I couldn't have shortchanged you couldn't have shortchanged she couldn't have shortchanged we couldn't have shortchanged you couldn't have shortchanged they couldn't have shortchanged	I couldn't have been shortchanging you couldn't have been shortchanging she couldn't have been shortchanging we couldn't have been shortchanging you couldn't have been shortchanging they couldn't have been shortchanging

Interrogative form

Simple form	V-ing form
could I shortchange? could you shortchange? could she shortchange? could we shortchange? could you shortchange? could they shortchange?	could I be shortchanging? could you be shortchanging? could she be shortchanging? could we be shortchanging? could you be shortchanging? could they be shortchanging?
Perfect	V-ing perfect
could I have shortchanged? could you have shortchanged? could she have shortchanged? could we have shortchanged? could you have shortchanged? could they have shortchanged?	could I have been shortchanging? could you have been shortchanging? could she have been shortchanging? could we have been shortchanging? could you have been shortchanging? could they have been shortchanging?

Interro-negative form

Simple form	V-ing form
couldn't I shortchange? couldn't you shortchange? couldn't she shortchange? couldn't we shortchange? couldn't you shortchange? couldn't they shortchange?	couldn't I be shortchanging? couldn't you be shortchanging? couldn't she be shortchanging? couldn't we be shortchanging? couldn't you be shortchanging? couldn't they be shortchanging?
Perfect	V-ing perfect
couldn't I have shortchanged? couldn't you have shortchanged? couldn't she have shortchanged? couldn't we have shortchanged? couldn't you have shortchanged? couldn't they have shortchanged?	couldn't I have been shortchanging? couldn't you have been shortchanging? couldn't she have been shortchanging? couldn't we have been shortchanging? couldn't you have been shortchanging? couldn't they have been shortchanging?