I can filter you can filter he can filter we can filter you can filter they can filter
Forme en V-ing
I can be filtering you can be filtering he can be filtering we can be filtering you can be filtering they can be filtering
Perfect
I can have filtered you can have filtered he can have filtered we can have filtered you can have filtered they can have filtered
Perfect en V-ing
I can have been filtering you can have been filtering he can have been filtering we can have been filtering you can have been filtering they can have been filtering
Négation
Forme simple
I can't filter you can't filter he can't filter we can't filter you can't filter they can't filter
Forme en V-ing
I can't be filtering you can't be filtering he can't be filtering we can't be filtering you can't be filtering they can't be filtering
Perfect
I can't have filtered you can't have filtered he can't have filtered we can't have filtered you can't have filtered they can't have filtered
Perfect en V-ing
I can't have been filtering you can't have been filtering he can't have been filtering we can't have been filtering you can't have been filtering they can't have been filtering
Forme interrogative
Forme simple
can I filter? can you filter? can he filter? can we filter? can you filter? can they filter?
Forme en V-ing
can I be filtering? can you be filtering? can he be filtering? can we be filtering? can you be filtering? can they be filtering?
Perfect
can I have filtered? can you have filtered? can he have filtered? can we have filtered? can you have filtered? can they have filtered?
Perfect en V-ing
can I have been filtering? can you have been filtering? can he have been filtering? can we have been filtering? can you have been filtering? can they have been filtering?
Forme interro-négative
Forme simple
can't I filter? can't you filter? can't he filter? can't we filter? can't you filter? can't they filter?
Forme en V-ing
can't I be filtering? can't you be filtering? can't he be filtering? can't we be filtering? can't you be filtering? can't they be filtering?
Perfect
can't I have filtered? can't you have filtered? can't he have filtered? can't we have filtered? can't you have filtered? can't they have filtered?
Perfect en V-ing
can't I have been filtering? can't you have been filtering? can't he have been filtering? can't we have been filtering? can't you have been filtering? can't they have been filtering?