I can trademark you can trademark he can trademark we can trademark you can trademark they can trademark
V-ing form
I can be trademarking you can be trademarking he can be trademarking we can be trademarking you can be trademarking they can be trademarking
Perfect
I can have trademarked you can have trademarked he can have trademarked we can have trademarked you can have trademarked they can have trademarked
V-ing perfect
I can have been trademarking you can have been trademarking he can have been trademarking we can have been trademarking you can have been trademarking they can have been trademarking
Negation
Simple form
I cannot trademark you cannot trademark he cannot trademark we cannot trademark you cannot trademark they cannot trademark
V-ing form
I cannot be trademarking you cannot be trademarking he cannot be trademarking we cannot be trademarking you cannot be trademarking they cannot be trademarking
Perfect
I cannot have trademarked you cannot have trademarked he cannot have trademarked we cannot have trademarked you cannot have trademarked they cannot have trademarked
V-ing perfect
I cannot have been trademarking you cannot have been trademarking he cannot have been trademarking we cannot have been trademarking you cannot have been trademarking they cannot have been trademarking
Interrogative form
Simple form
can I trademark? can you trademark? can he trademark? can we trademark? can you trademark? can they trademark?
V-ing form
can I be trademarking? can you be trademarking? can he be trademarking? can we be trademarking? can you be trademarking? can they be trademarking?
Perfect
can I have trademarked? can you have trademarked? can he have trademarked? can we have trademarked? can you have trademarked? can they have trademarked?
V-ing perfect
can I have been trademarking? can you have been trademarking? can he have been trademarking? can we have been trademarking? can you have been trademarking? can they have been trademarking?
Interro-negative form
Simple form
can I not trademark? can you not trademark? can he not trademark? can we not trademark? can you not trademark? can they not trademark?
V-ing form
can I not be trademarking? can you not be trademarking? can he not be trademarking? can we not be trademarking? can you not be trademarking? can they not be trademarking?
Perfect
can I not have trademarked? can you not have trademarked? can he not have trademarked? can we not have trademarked? can you not have trademarked? can they not have trademarked?
V-ing perfect
can I not have been trademarking? can you not have been trademarking? can he not have been trademarking? can we not have been trademarking? can you not have been trademarking? can they not have been trademarking?