I could cannon you could cannon she could cannon we could cannon you could cannon they could cannon
V-ing form
I could be cannoning you could be cannoning she could be cannoning we could be cannoning you could be cannoning they could be cannoning
Perfect
I could have cannoned you could have cannoned she could have cannoned we could have cannoned you could have cannoned they could have cannoned
V-ing perfect
I could have been cannoning you could have been cannoning she could have been cannoning we could have been cannoning you could have been cannoning they could have been cannoning
Negation
Simple form
I could not cannon you could not cannon she could not cannon we could not cannon you could not cannon they could not cannon
V-ing form
I could not be cannoning you could not be cannoning she could not be cannoning we could not be cannoning you could not be cannoning they could not be cannoning
Perfect
I could not have cannoned you could not have cannoned she could not have cannoned we could not have cannoned you could not have cannoned they could not have cannoned
V-ing perfect
I could not have been cannoning you could not have been cannoning she could not have been cannoning we could not have been cannoning you could not have been cannoning they could not have been cannoning
Interrogative form
Simple form
could I cannon? could you cannon? could she cannon? could we cannon? could you cannon? could they cannon?
V-ing form
could I be cannoning? could you be cannoning? could she be cannoning? could we be cannoning? could you be cannoning? could they be cannoning?
Perfect
could I have cannoned? could you have cannoned? could she have cannoned? could we have cannoned? could you have cannoned? could they have cannoned?
V-ing perfect
could I have been cannoning? could you have been cannoning? could she have been cannoning? could we have been cannoning? could you have been cannoning? could they have been cannoning?
Interro-negative form
Simple form
could I not cannon? could you not cannon? could she not cannon? could we not cannon? could you not cannon? could they not cannon?
V-ing form
could I not be cannoning? could you not be cannoning? could she not be cannoning? could we not be cannoning? could you not be cannoning? could they not be cannoning?
Perfect
could I not have cannoned? could you not have cannoned? could she not have cannoned? could we not have cannoned? could you not have cannoned? could they not have cannoned?
V-ing perfect
could I not have been cannoning? could you not have been cannoning? could she not have been cannoning? could we not have been cannoning? could you not have been cannoning? could they not have been cannoning?