I could wake you could wake she could wake we could wake you could wake they could wake
V-ing form
I could be waking you could be waking she could be waking we could be waking you could be waking they could be waking
Perfect
I could have woken you could have woken she 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 she could have been waking we could have been waking you could have been waking they could have been waking
Negation
Simple form
I couldn't wake you couldn't wake she couldn't wake we couldn't wake you couldn't wake they couldn't wake
V-ing form
I couldn't be waking you couldn't be waking she couldn't be waking we couldn't be waking you couldn't be waking they couldn't be waking
Perfect
I couldn't have woken you couldn't have woken she couldn't have woken we couldn't have woken you couldn't have woken they couldn't have woken
V-ing perfect
I couldn't have been waking you couldn't have been waking she couldn't have been waking we couldn't have been waking you couldn't have been waking they couldn't have been waking
Interrogative form
Simple form
could I wake? could you wake? could she wake? could we wake? could you wake? could they wake?
V-ing form
could I be waking? could you be waking? could she be waking? could we be waking? could you be waking? could they be waking?
Perfect
could I have woken? could you have woken? could she 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 she have been waking? could we have been waking? could you have been waking? could they have been waking?
Interro-negative form
Simple form
couldn't I wake? couldn't you wake? couldn't she wake? couldn't we wake? couldn't you wake? couldn't they wake?
V-ing form
couldn't I be waking? couldn't you be waking? couldn't she be waking? couldn't we be waking? couldn't you be waking? couldn't they be waking?
Perfect
couldn't I have woken? couldn't you have woken? couldn't she have woken? couldn't we have woken? couldn't you have woken? couldn't they have woken?
V-ing perfect
couldn't I have been waking? couldn't you have been waking? couldn't she have been waking? couldn't we have been waking? couldn't you have been waking? couldn't they have been waking?