I could vote you could vote she could vote we could vote you could vote they could vote
V-ing form
I could be voting you could be voting she could be voting we could be voting you could be voting they could be voting
Perfect
I could have voted you could have voted she could have voted we could have voted you could have voted they could have voted
V-ing perfect
I could have been voting you could have been voting she could have been voting we could have been voting you could have been voting they could have been voting
Negation
Simple form
I couldn't vote you couldn't vote she couldn't vote we couldn't vote you couldn't vote they couldn't vote
V-ing form
I couldn't be voting you couldn't be voting she couldn't be voting we couldn't be voting you couldn't be voting they couldn't be voting
Perfect
I couldn't have voted you couldn't have voted she couldn't have voted we couldn't have voted you couldn't have voted they couldn't have voted
V-ing perfect
I couldn't have been voting you couldn't have been voting she couldn't have been voting we couldn't have been voting you couldn't have been voting they couldn't have been voting
Interrogative form
Simple form
could I vote? could you vote? could she vote? could we vote? could you vote? could they vote?
V-ing form
could I be voting? could you be voting? could she be voting? could we be voting? could you be voting? could they be voting?
Perfect
could I have voted? could you have voted? could she have voted? could we have voted? could you have voted? could they have voted?
V-ing perfect
could I have been voting? could you have been voting? could she have been voting? could we have been voting? could you have been voting? could they have been voting?
Interro-negative form
Simple form
couldn't I vote? couldn't you vote? couldn't she vote? couldn't we vote? couldn't you vote? couldn't they vote?
V-ing form
couldn't I be voting? couldn't you be voting? couldn't she be voting? couldn't we be voting? couldn't you be voting? couldn't they be voting?
Perfect
couldn't I have voted? couldn't you have voted? couldn't she have voted? couldn't we have voted? couldn't you have voted? couldn't they have voted?
V-ing perfect
couldn't I have been voting? couldn't you have been voting? couldn't she have been voting? couldn't we have been voting? couldn't you have been voting? couldn't they have been voting?