English verb conjugation
COULD BACKGROUND

Regular verb: background - backgrounded - backgrounded

Affirmation

Simple form	V-ing form
I could background you could background he could background we could background you could background they could background	I could be backgrounding you could be backgrounding he could be backgrounding we could be backgrounding you could be backgrounding they could be backgrounding
Perfect	V-ing perfect
I could have backgrounded you could have backgrounded he could have backgrounded we could have backgrounded you could have backgrounded they could have backgrounded	I could have been backgrounding you could have been backgrounding he could have been backgrounding we could have been backgrounding you could have been backgrounding they could have been backgrounding

Negation

Simple form	V-ing form
I couldn't background you couldn't background he couldn't background we couldn't background you couldn't background they couldn't background	I couldn't be backgrounding you couldn't be backgrounding he couldn't be backgrounding we couldn't be backgrounding you couldn't be backgrounding they couldn't be backgrounding
Perfect	V-ing perfect
I couldn't have backgrounded you couldn't have backgrounded he couldn't have backgrounded we couldn't have backgrounded you couldn't have backgrounded they couldn't have backgrounded	I couldn't have been backgrounding you couldn't have been backgrounding he couldn't have been backgrounding we couldn't have been backgrounding you couldn't have been backgrounding they couldn't have been backgrounding

Interrogative form

Simple form	V-ing form
could I background? could you background? could he background? could we background? could you background? could they background?	could I be backgrounding? could you be backgrounding? could he be backgrounding? could we be backgrounding? could you be backgrounding? could they be backgrounding?
Perfect	V-ing perfect
could I have backgrounded? could you have backgrounded? could he have backgrounded? could we have backgrounded? could you have backgrounded? could they have backgrounded?	could I have been backgrounding? could you have been backgrounding? could he have been backgrounding? could we have been backgrounding? could you have been backgrounding? could they have been backgrounding?

Interro-negative form

Simple form	V-ing form
couldn't I background? couldn't you background? couldn't he background? couldn't we background? couldn't you background? couldn't they background?	couldn't I be backgrounding? couldn't you be backgrounding? couldn't he be backgrounding? couldn't we be backgrounding? couldn't you be backgrounding? couldn't they be backgrounding?
Perfect	V-ing perfect
couldn't I have backgrounded? couldn't you have backgrounded? couldn't he have backgrounded? couldn't we have backgrounded? couldn't you have backgrounded? couldn't they have backgrounded?	couldn't I have been backgrounding? couldn't you have been backgrounding? couldn't he have been backgrounding? couldn't we have been backgrounding? couldn't you have been backgrounding? couldn't they have been backgrounding?