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