I can register you can register he can register we can register you can register they can register
Forme en V-ing
I can be registering you can be registering he can be registering we can be registering you can be registering they can be registering
Perfect
I can have registered you can have registered he can have registered we can have registered you can have registered they can have registered
Perfect en V-ing
I can have been registering you can have been registering he can have been registering we can have been registering you can have been registering they can have been registering
Négation
Forme simple
I can't register you can't register he can't register we can't register you can't register they can't register
Forme en V-ing
I can't be registering you can't be registering he can't be registering we can't be registering you can't be registering they can't be registering
Perfect
I can't have registered you can't have registered he can't have registered we can't have registered you can't have registered they can't have registered
Perfect en V-ing
I can't have been registering you can't have been registering he can't have been registering we can't have been registering you can't have been registering they can't have been registering
Forme interrogative
Forme simple
can I register? can you register? can he register? can we register? can you register? can they register?
Forme en V-ing
can I be registering? can you be registering? can he be registering? can we be registering? can you be registering? can they be registering?
Perfect
can I have registered? can you have registered? can he have registered? can we have registered? can you have registered? can they have registered?
Perfect en V-ing
can I have been registering? can you have been registering? can he have been registering? can we have been registering? can you have been registering? can they have been registering?
Forme interro-négative
Forme simple
can't I register? can't you register? can't he register? can't we register? can't you register? can't they register?
Forme en V-ing
can't I be registering? can't you be registering? can't he be registering? can't we be registering? can't you be registering? can't they be registering?
Perfect
can't I have registered? can't you have registered? can't he have registered? can't we have registered? can't you have registered? can't they have registered?
Perfect en V-ing
can't I have been registering? can't you have been registering? can't he have been registering? can't we have been registering? can't you have been registering? can't they have been registering?