I could whoop you could whoop he could whoop we could whoop you could whoop they could whoop
V-ing form
I could be whooping you could be whooping he could be whooping we could be whooping you could be whooping they could be whooping
Perfect
I could have whooped you could have whooped he could have whooped we could have whooped you could have whooped they could have whooped
V-ing perfect
I could have been whooping you could have been whooping he could have been whooping we could have been whooping you could have been whooping they could have been whooping
Negation
Simple form
I couldn't whoop you couldn't whoop he couldn't whoop we couldn't whoop you couldn't whoop they couldn't whoop
V-ing form
I couldn't be whooping you couldn't be whooping he couldn't be whooping we couldn't be whooping you couldn't be whooping they couldn't be whooping
Perfect
I couldn't have whooped you couldn't have whooped he couldn't have whooped we couldn't have whooped you couldn't have whooped they couldn't have whooped
V-ing perfect
I couldn't have been whooping you couldn't have been whooping he couldn't have been whooping we couldn't have been whooping you couldn't have been whooping they couldn't have been whooping
Interrogative form
Simple form
could I whoop? could you whoop? could he whoop? could we whoop? could you whoop? could they whoop?
V-ing form
could I be whooping? could you be whooping? could he be whooping? could we be whooping? could you be whooping? could they be whooping?
Perfect
could I have whooped? could you have whooped? could he have whooped? could we have whooped? could you have whooped? could they have whooped?
V-ing perfect
could I have been whooping? could you have been whooping? could he have been whooping? could we have been whooping? could you have been whooping? could they have been whooping?
Interro-negative form
Simple form
couldn't I whoop? couldn't you whoop? couldn't he whoop? couldn't we whoop? couldn't you whoop? couldn't they whoop?
V-ing form
couldn't I be whooping? couldn't you be whooping? couldn't he be whooping? couldn't we be whooping? couldn't you be whooping? couldn't they be whooping?
Perfect
couldn't I have whooped? couldn't you have whooped? couldn't he have whooped? couldn't we have whooped? couldn't you have whooped? couldn't they have whooped?
V-ing perfect
couldn't I have been whooping? couldn't you have been whooping? couldn't he have been whooping? couldn't we have been whooping? couldn't you have been whooping? couldn't they have been whooping?