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 cannot forward you cannot forward she cannot forward we cannot forward you cannot forward they cannot forward
V-ing form
I cannot be forwarding you cannot be forwarding she cannot be forwarding we cannot be forwarding you cannot be forwarding they cannot be forwarding
Perfect
I cannot have forwarded you cannot have forwarded she cannot have forwarded we cannot have forwarded you cannot have forwarded they cannot have forwarded
V-ing perfect
I cannot have been forwarding you cannot have been forwarding she cannot have been forwarding we cannot have been forwarding you cannot have been forwarding they cannot 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 I not forward? can you not forward? can she not forward? can we not forward? can you not forward? can they not forward?
V-ing form
can I not be forwarding? can you not be forwarding? can she not be forwarding? can we not be forwarding? can you not be forwarding? can they not be forwarding?
Perfect
can I not have forwarded? can you not have forwarded? can she not have forwarded? can we not have forwarded? can you not have forwarded? can they not have forwarded?
V-ing perfect
can I not have been forwarding? can you not have been forwarding? can she not have been forwarding? can we not have been forwarding? can you not have been forwarding? can they not have been forwarding?