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