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