I can birl you can birl he can birl we can birl you can birl they can birl
Forme en V-ing
I can be birling you can be birling he can be birling we can be birling you can be birling they can be birling
Perfect
I can have birled you can have birled he can have birled we can have birled you can have birled they can have birled
Perfect en V-ing
I can have been birling you can have been birling he can have been birling we can have been birling you can have been birling they can have been birling
Négation
Forme simple
I can't birl you can't birl he can't birl we can't birl you can't birl they can't birl
Forme en V-ing
I can't be birling you can't be birling he can't be birling we can't be birling you can't be birling they can't be birling
Perfect
I can't have birled you can't have birled he can't have birled we can't have birled you can't have birled they can't have birled
Perfect en V-ing
I can't have been birling you can't have been birling he can't have been birling we can't have been birling you can't have been birling they can't have been birling
Forme interrogative
Forme simple
can I birl? can you birl? can he birl? can we birl? can you birl? can they birl?
Forme en V-ing
can I be birling? can you be birling? can he be birling? can we be birling? can you be birling? can they be birling?
Perfect
can I have birled? can you have birled? can he have birled? can we have birled? can you have birled? can they have birled?
Perfect en V-ing
can I have been birling? can you have been birling? can he have been birling? can we have been birling? can you have been birling? can they have been birling?
Forme interro-négative
Forme simple
can't I birl? can't you birl? can't he birl? can't we birl? can't you birl? can't they birl?
Forme en V-ing
can't I be birling? can't you be birling? can't he be birling? can't we be birling? can't you be birling? can't they be birling?
Perfect
can't I have birled? can't you have birled? can't he have birled? can't we have birled? can't you have birled? can't they have birled?
Perfect en V-ing
can't I have been birling? can't you have been birling? can't he have been birling? can't we have been birling? can't you have been birling? can't they have been birling?