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