I could scrouge you could scrouge he could scrouge we could scrouge you could scrouge they could scrouge
V-ing form
I could be scrouging you could be scrouging he could be scrouging we could be scrouging you could be scrouging they could be scrouging
Perfect
I could have scrouged you could have scrouged he could have scrouged we could have scrouged you could have scrouged they could have scrouged
V-ing perfect
I could have been scrouging you could have been scrouging he could have been scrouging we could have been scrouging you could have been scrouging they could have been scrouging
Negation
Simple form
I could not scrouge you could not scrouge he could not scrouge we could not scrouge you could not scrouge they could not scrouge
V-ing form
I could not be scrouging you could not be scrouging he could not be scrouging we could not be scrouging you could not be scrouging they could not be scrouging
Perfect
I could not have scrouged you could not have scrouged he could not have scrouged we could not have scrouged you could not have scrouged they could not have scrouged
V-ing perfect
I could not have been scrouging you could not have been scrouging he could not have been scrouging we could not have been scrouging you could not have been scrouging they could not have been scrouging
Interrogative form
Simple form
could I scrouge? could you scrouge? could he scrouge? could we scrouge? could you scrouge? could they scrouge?
V-ing form
could I be scrouging? could you be scrouging? could he be scrouging? could we be scrouging? could you be scrouging? could they be scrouging?
Perfect
could I have scrouged? could you have scrouged? could he have scrouged? could we have scrouged? could you have scrouged? could they have scrouged?
V-ing perfect
could I have been scrouging? could you have been scrouging? could he have been scrouging? could we have been scrouging? could you have been scrouging? could they have been scrouging?
Interro-negative form
Simple form
could I not scrouge? could you not scrouge? could he not scrouge? could we not scrouge? could you not scrouge? could they not scrouge?
V-ing form
could I not be scrouging? could you not be scrouging? could he not be scrouging? could we not be scrouging? could you not be scrouging? could they not be scrouging?
Perfect
could I not have scrouged? could you not have scrouged? could he not have scrouged? could we not have scrouged? could you not have scrouged? could they not have scrouged?
V-ing perfect
could I not have been scrouging? could you not have been scrouging? could he not have been scrouging? could we not have been scrouging? could you not have been scrouging? could they not have been scrouging?