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