I could foregather you could foregather he could foregather we could foregather you could foregather they could foregather
V-ing form
I could be foregathering you could be foregathering he could be foregathering we could be foregathering you could be foregathering they could be foregathering
Perfect
I could have foregathered you could have foregathered he could have foregathered we could have foregathered you could have foregathered they could have foregathered
V-ing perfect
I could have been foregathering you could have been foregathering he could have been foregathering we could have been foregathering you could have been foregathering they could have been foregathering
Negation
Simple form
I couldn't foregather you couldn't foregather he couldn't foregather we couldn't foregather you couldn't foregather they couldn't foregather
V-ing form
I couldn't be foregathering you couldn't be foregathering he couldn't be foregathering we couldn't be foregathering you couldn't be foregathering they couldn't be foregathering
Perfect
I couldn't have foregathered you couldn't have foregathered he couldn't have foregathered we couldn't have foregathered you couldn't have foregathered they couldn't have foregathered
V-ing perfect
I couldn't have been foregathering you couldn't have been foregathering he couldn't have been foregathering we couldn't have been foregathering you couldn't have been foregathering they couldn't have been foregathering
Interrogative form
Simple form
could I foregather? could you foregather? could he foregather? could we foregather? could you foregather? could they foregather?
V-ing form
could I be foregathering? could you be foregathering? could he be foregathering? could we be foregathering? could you be foregathering? could they be foregathering?
Perfect
could I have foregathered? could you have foregathered? could he have foregathered? could we have foregathered? could you have foregathered? could they have foregathered?
V-ing perfect
could I have been foregathering? could you have been foregathering? could he have been foregathering? could we have been foregathering? could you have been foregathering? could they have been foregathering?
Interro-negative form
Simple form
couldn't I foregather? couldn't you foregather? couldn't he foregather? couldn't we foregather? couldn't you foregather? couldn't they foregather?
V-ing form
couldn't I be foregathering? couldn't you be foregathering? couldn't he be foregathering? couldn't we be foregathering? couldn't you be foregathering? couldn't they be foregathering?
Perfect
couldn't I have foregathered? couldn't you have foregathered? couldn't he have foregathered? couldn't we have foregathered? couldn't you have foregathered? couldn't they have foregathered?
V-ing perfect
couldn't I have been foregathering? couldn't you have been foregathering? couldn't he have been foregathering? couldn't we have been foregathering? couldn't you have been foregathering? couldn't they have been foregathering?