I could poke you could poke she could poke we could poke you could poke they could poke
V-ing form
I could be poking you could be poking she could be poking we could be poking you could be poking they could be poking
Perfect
I could have poked you could have poked she could have poked we could have poked you could have poked they could have poked
V-ing perfect
I could have been poking you could have been poking she could have been poking we could have been poking you could have been poking they could have been poking
Negation
Simple form
I could not poke you could not poke she could not poke we could not poke you could not poke they could not poke
V-ing form
I could not be poking you could not be poking she could not be poking we could not be poking you could not be poking they could not be poking
Perfect
I could not have poked you could not have poked she could not have poked we could not have poked you could not have poked they could not have poked
V-ing perfect
I could not have been poking you could not have been poking she could not have been poking we could not have been poking you could not have been poking they could not have been poking
Interrogative form
Simple form
could I poke? could you poke? could she poke? could we poke? could you poke? could they poke?
V-ing form
could I be poking? could you be poking? could she be poking? could we be poking? could you be poking? could they be poking?
Perfect
could I have poked? could you have poked? could she have poked? could we have poked? could you have poked? could they have poked?
V-ing perfect
could I have been poking? could you have been poking? could she have been poking? could we have been poking? could you have been poking? could they have been poking?
Interro-negative form
Simple form
could I not poke? could you not poke? could she not poke? could we not poke? could you not poke? could they not poke?
V-ing form
could I not be poking? could you not be poking? could she not be poking? could we not be poking? could you not be poking? could they not be poking?
Perfect
could I not have poked? could you not have poked? could she not have poked? could we not have poked? could you not have poked? could they not have poked?
V-ing perfect
could I not have been poking? could you not have been poking? could she not have been poking? could we not have been poking? could you not have been poking? could they not have been poking?