I could address you could address he could address we could address you could address they could address
V-ing form
I could be addressing you could be addressing he could be addressing we could be addressing you could be addressing they could be addressing
Perfect
I could have addressed you could have addressed he could have addressed we could have addressed you could have addressed they could have addressed
V-ing perfect
I could have been addressing you could have been addressing he could have been addressing we could have been addressing you could have been addressing they could have been addressing
Negation
Simple form
I could not address you could not address he could not address we could not address you could not address they could not address
V-ing form
I could not be addressing you could not be addressing he could not be addressing we could not be addressing you could not be addressing they could not be addressing
Perfect
I could not have addressed you could not have addressed he could not have addressed we could not have addressed you could not have addressed they could not have addressed
V-ing perfect
I could not have been addressing you could not have been addressing he could not have been addressing we could not have been addressing you could not have been addressing they could not have been addressing
Interrogative form
Simple form
could I address? could you address? could he address? could we address? could you address? could they address?
V-ing form
could I be addressing? could you be addressing? could he be addressing? could we be addressing? could you be addressing? could they be addressing?
Perfect
could I have addressed? could you have addressed? could he have addressed? could we have addressed? could you have addressed? could they have addressed?
V-ing perfect
could I have been addressing? could you have been addressing? could he have been addressing? could we have been addressing? could you have been addressing? could they have been addressing?
Interro-negative form
Simple form
could I not address? could you not address? could he not address? could we not address? could you not address? could they not address?
V-ing form
could I not be addressing? could you not be addressing? could he not be addressing? could we not be addressing? could you not be addressing? could they not be addressing?
Perfect
could I not have addressed? could you not have addressed? could he not have addressed? could we not have addressed? could you not have addressed? could they not have addressed?
V-ing perfect
could I not have been addressing? could you not have been addressing? could he not have been addressing? could we not have been addressing? could you not have been addressing? could they not have been addressing?