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 can't trademark you can't trademark he can't trademark we can't trademark you can't trademark they can't trademark
V-ing form
I can't be trademarking you can't be trademarking he can't be trademarking we can't be trademarking you can't be trademarking they can't be trademarking
Perfect
I can't have trademarked you can't have trademarked he can't have trademarked we can't have trademarked you can't have trademarked they can't have trademarked
V-ing perfect
I can't have been trademarking you can't have been trademarking he can't have been trademarking we can't have been trademarking you can't have been trademarking they can't 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't I trademark? can't you trademark? can't he trademark? can't we trademark? can't you trademark? can't they trademark?
V-ing form
can't I be trademarking? can't you be trademarking? can't he be trademarking? can't we be trademarking? can't you be trademarking? can't they be trademarking?
Perfect
can't I have trademarked? can't you have trademarked? can't he have trademarked? can't we have trademarked? can't you have trademarked? can't they have trademarked?
V-ing perfect
can't I have been trademarking? can't you have been trademarking? can't he have been trademarking? can't we have been trademarking? can't you have been trademarking? can't they have been trademarking?