I could trump you could trump he could trump we could trump you could trump they could trump
V-ing form
I could be trumping you could be trumping he could be trumping we could be trumping you could be trumping they could be trumping
Perfect
I could have trumped you could have trumped he could have trumped we could have trumped you could have trumped they could have trumped
V-ing perfect
I could have been trumping you could have been trumping he could have been trumping we could have been trumping you could have been trumping they could have been trumping
Negation
Simple form
I could not trump you could not trump he could not trump we could not trump you could not trump they could not trump
V-ing form
I could not be trumping you could not be trumping he could not be trumping we could not be trumping you could not be trumping they could not be trumping
Perfect
I could not have trumped you could not have trumped he could not have trumped we could not have trumped you could not have trumped they could not have trumped
V-ing perfect
I could not have been trumping you could not have been trumping he could not have been trumping we could not have been trumping you could not have been trumping they could not have been trumping
Interrogative form
Simple form
could I trump? could you trump? could he trump? could we trump? could you trump? could they trump?
V-ing form
could I be trumping? could you be trumping? could he be trumping? could we be trumping? could you be trumping? could they be trumping?
Perfect
could I have trumped? could you have trumped? could he have trumped? could we have trumped? could you have trumped? could they have trumped?
V-ing perfect
could I have been trumping? could you have been trumping? could he have been trumping? could we have been trumping? could you have been trumping? could they have been trumping?
Interro-negative form
Simple form
could I not trump? could you not trump? could he not trump? could we not trump? could you not trump? could they not trump?
V-ing form
could I not be trumping? could you not be trumping? could he not be trumping? could we not be trumping? could you not be trumping? could they not be trumping?
Perfect
could I not have trumped? could you not have trumped? could he not have trumped? could we not have trumped? could you not have trumped? could they not have trumped?
V-ing perfect
could I not have been trumping? could you not have been trumping? could he not have been trumping? could we not have been trumping? could you not have been trumping? could they not have been trumping?