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