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