I could gallop you could gallop she could gallop we could gallop you could gallop they could gallop
V-ing form
I could be galloping you could be galloping she could be galloping we could be galloping you could be galloping they could be galloping
Perfect
I could have galloped you could have galloped she could have galloped we could have galloped you could have galloped they could have galloped
V-ing perfect
I could have been galloping you could have been galloping she could have been galloping we could have been galloping you could have been galloping they could have been galloping
Negation
Simple form
I could not gallop you could not gallop she could not gallop we could not gallop you could not gallop they could not gallop
V-ing form
I could not be galloping you could not be galloping she could not be galloping we could not be galloping you could not be galloping they could not be galloping
Perfect
I could not have galloped you could not have galloped she could not have galloped we could not have galloped you could not have galloped they could not have galloped
V-ing perfect
I could not have been galloping you could not have been galloping she could not have been galloping we could not have been galloping you could not have been galloping they could not have been galloping
Interrogative form
Simple form
could I gallop? could you gallop? could she gallop? could we gallop? could you gallop? could they gallop?
V-ing form
could I be galloping? could you be galloping? could she be galloping? could we be galloping? could you be galloping? could they be galloping?
Perfect
could I have galloped? could you have galloped? could she have galloped? could we have galloped? could you have galloped? could they have galloped?
V-ing perfect
could I have been galloping? could you have been galloping? could she have been galloping? could we have been galloping? could you have been galloping? could they have been galloping?
Interro-negative form
Simple form
could I not gallop? could you not gallop? could she not gallop? could we not gallop? could you not gallop? could they not gallop?
V-ing form
could I not be galloping? could you not be galloping? could she not be galloping? could we not be galloping? could you not be galloping? could they not be galloping?
Perfect
could I not have galloped? could you not have galloped? could she not have galloped? could we not have galloped? could you not have galloped? could they not have galloped?
V-ing perfect
could I not have been galloping? could you not have been galloping? could she not have been galloping? could we not have been galloping? could you not have been galloping? could they not have been galloping?