I could scribe you could scribe he could scribe we could scribe you could scribe they could scribe
V-ing form
I could be scribing you could be scribing he could be scribing we could be scribing you could be scribing they could be scribing
Perfect
I could have scribed you could have scribed he could have scribed we could have scribed you could have scribed they could have scribed
V-ing perfect
I could have been scribing you could have been scribing he could have been scribing we could have been scribing you could have been scribing they could have been scribing
Negation
Simple form
I could not scribe you could not scribe he could not scribe we could not scribe you could not scribe they could not scribe
V-ing form
I could not be scribing you could not be scribing he could not be scribing we could not be scribing you could not be scribing they could not be scribing
Perfect
I could not have scribed you could not have scribed he could not have scribed we could not have scribed you could not have scribed they could not have scribed
V-ing perfect
I could not have been scribing you could not have been scribing he could not have been scribing we could not have been scribing you could not have been scribing they could not have been scribing
Interrogative form
Simple form
could I scribe? could you scribe? could he scribe? could we scribe? could you scribe? could they scribe?
V-ing form
could I be scribing? could you be scribing? could he be scribing? could we be scribing? could you be scribing? could they be scribing?
Perfect
could I have scribed? could you have scribed? could he have scribed? could we have scribed? could you have scribed? could they have scribed?
V-ing perfect
could I have been scribing? could you have been scribing? could he have been scribing? could we have been scribing? could you have been scribing? could they have been scribing?
Interro-negative form
Simple form
could I not scribe? could you not scribe? could he not scribe? could we not scribe? could you not scribe? could they not scribe?
V-ing form
could I not be scribing? could you not be scribing? could he not be scribing? could we not be scribing? could you not be scribing? could they not be scribing?
Perfect
could I not have scribed? could you not have scribed? could he not have scribed? could we not have scribed? could you not have scribed? could they not have scribed?
V-ing perfect
could I not have been scribing? could you not have been scribing? could he not have been scribing? could we not have been scribing? could you not have been scribing? could they not have been scribing?