I could wake you could wake he could wake we could wake you could wake they could wake
V-ing form
I could be waking you could be waking he could be waking we could be waking you could be waking they could be waking
Perfect
I could have woken you could have woken he could have woken we could have woken you could have woken they could have woken
V-ing perfect
I could have been waking you could have been waking he could have been waking we could have been waking you could have been waking they could have been waking
Negation
Simple form
I could not wake you could not wake he could not wake we could not wake you could not wake they could not wake
V-ing form
I could not be waking you could not be waking he could not be waking we could not be waking you could not be waking they could not be waking
Perfect
I could not have woken you could not have woken he could not have woken we could not have woken you could not have woken they could not have woken
V-ing perfect
I could not have been waking you could not have been waking he could not have been waking we could not have been waking you could not have been waking they could not have been waking
Interrogative form
Simple form
could I wake? could you wake? could he wake? could we wake? could you wake? could they wake?
V-ing form
could I be waking? could you be waking? could he be waking? could we be waking? could you be waking? could they be waking?
Perfect
could I have woken? could you have woken? could he have woken? could we have woken? could you have woken? could they have woken?
V-ing perfect
could I have been waking? could you have been waking? could he have been waking? could we have been waking? could you have been waking? could they have been waking?
Interro-negative form
Simple form
could I not wake? could you not wake? could he not wake? could we not wake? could you not wake? could they not wake?
V-ing form
could I not be waking? could you not be waking? could he not be waking? could we not be waking? could you not be waking? could they not be waking?
Perfect
could I not have woken? could you not have woken? could he not have woken? could we not have woken? could you not have woken? could they not have woken?
V-ing perfect
could I not have been waking? could you not have been waking? could he not have been waking? could we not have been waking? could you not have been waking? could they not have been waking?