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