I could depose you could depose she could depose we could depose you could depose they could depose
V-ing form
I could be deposing you could be deposing she could be deposing we could be deposing you could be deposing they could be deposing
Perfect
I could have deposed you could have deposed she 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 she 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 she 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 she 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 she 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 she 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 she depose? could we depose? could you depose? could they depose?
V-ing form
could I be deposing? could you be deposing? could she be deposing? could we be deposing? could you be deposing? could they be deposing?
Perfect
could I have deposed? could you have deposed? could she 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 she 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 she 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 she 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 she 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 she have been deposing? couldn't we have been deposing? couldn't you have been deposing? couldn't they have been deposing?