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