I can congest you can congest he can congest we can congest you can congest they can congest
Forme en V-ing
I can be congesting you can be congesting he can be congesting we can be congesting you can be congesting they can be congesting
Perfect
I can have congested you can have congested he can have congested we can have congested you can have congested they can have congested
Perfect en V-ing
I can have been congesting you can have been congesting he can have been congesting we can have been congesting you can have been congesting they can have been congesting
Négation
Forme simple
I can't congest you can't congest he can't congest we can't congest you can't congest they can't congest
Forme en V-ing
I can't be congesting you can't be congesting he can't be congesting we can't be congesting you can't be congesting they can't be congesting
Perfect
I can't have congested you can't have congested he can't have congested we can't have congested you can't have congested they can't have congested
Perfect en V-ing
I can't have been congesting you can't have been congesting he can't have been congesting we can't have been congesting you can't have been congesting they can't have been congesting
Forme interrogative
Forme simple
can I congest? can you congest? can he congest? can we congest? can you congest? can they congest?
Forme en V-ing
can I be congesting? can you be congesting? can he be congesting? can we be congesting? can you be congesting? can they be congesting?
Perfect
can I have congested? can you have congested? can he have congested? can we have congested? can you have congested? can they have congested?
Perfect en V-ing
can I have been congesting? can you have been congesting? can he have been congesting? can we have been congesting? can you have been congesting? can they have been congesting?
Forme interro-négative
Forme simple
can't I congest? can't you congest? can't he congest? can't we congest? can't you congest? can't they congest?
Forme en V-ing
can't I be congesting? can't you be congesting? can't he be congesting? can't we be congesting? can't you be congesting? can't they be congesting?
Perfect
can't I have congested? can't you have congested? can't he have congested? can't we have congested? can't you have congested? can't they have congested?
Perfect en V-ing
can't I have been congesting? can't you have been congesting? can't he have been congesting? can't we have been congesting? can't you have been congesting? can't they have been congesting?