I can remark you can remark he can remark we can remark you can remark they can remark
V-ing form
I can be remarking you can be remarking he can be remarking we can be remarking you can be remarking they can be remarking
Perfect
I can have remarked you can have remarked he can have remarked we can have remarked you can have remarked they can have remarked
V-ing perfect
I can have been remarking you can have been remarking he can have been remarking we can have been remarking you can have been remarking they can have been remarking
Negation
Simple form
I cannot remark you cannot remark he cannot remark we cannot remark you cannot remark they cannot remark
V-ing form
I cannot be remarking you cannot be remarking he cannot be remarking we cannot be remarking you cannot be remarking they cannot be remarking
Perfect
I cannot have remarked you cannot have remarked he cannot have remarked we cannot have remarked you cannot have remarked they cannot have remarked
V-ing perfect
I cannot have been remarking you cannot have been remarking he cannot have been remarking we cannot have been remarking you cannot have been remarking they cannot have been remarking
Interrogative form
Simple form
can I remark? can you remark? can he remark? can we remark? can you remark? can they remark?
V-ing form
can I be remarking? can you be remarking? can he be remarking? can we be remarking? can you be remarking? can they be remarking?
Perfect
can I have remarked? can you have remarked? can he have remarked? can we have remarked? can you have remarked? can they have remarked?
V-ing perfect
can I have been remarking? can you have been remarking? can he have been remarking? can we have been remarking? can you have been remarking? can they have been remarking?
Interro-negative form
Simple form
can I not remark? can you not remark? can he not remark? can we not remark? can you not remark? can they not remark?
V-ing form
can I not be remarking? can you not be remarking? can he not be remarking? can we not be remarking? can you not be remarking? can they not be remarking?
Perfect
can I not have remarked? can you not have remarked? can he not have remarked? can we not have remarked? can you not have remarked? can they not have remarked?
V-ing perfect
can I not have been remarking? can you not have been remarking? can he not have been remarking? can we not have been remarking? can you not have been remarking? can they not have been remarking?