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