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