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