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