I could quicken you could quicken he could quicken we could quicken you could quicken they could quicken
Forme en V-ing
I could be quickening you could be quickening he could be quickening we could be quickening you could be quickening they could be quickening
Perfect
I could have quickened you could have quickened he could have quickened we could have quickened you could have quickened they could have quickened
Perfect en V-ing
I could have been quickening you could have been quickening he could have been quickening we could have been quickening you could have been quickening they could have been quickening
Négation
Forme simple
I could not quicken you could not quicken he could not quicken we could not quicken you could not quicken they could not quicken
Forme en V-ing
I could not be quickening you could not be quickening he could not be quickening we could not be quickening you could not be quickening they could not be quickening
Perfect
I could not have quickened you could not have quickened he could not have quickened we could not have quickened you could not have quickened they could not have quickened
Perfect en V-ing
I could not have been quickening you could not have been quickening he could not have been quickening we could not have been quickening you could not have been quickening they could not have been quickening
Forme interrogative
Forme simple
could I quicken? could you quicken? could he quicken? could we quicken? could you quicken? could they quicken?
Forme en V-ing
could I be quickening? could you be quickening? could he be quickening? could we be quickening? could you be quickening? could they be quickening?
Perfect
could I have quickened? could you have quickened? could he have quickened? could we have quickened? could you have quickened? could they have quickened?
Perfect en V-ing
could I have been quickening? could you have been quickening? could he have been quickening? could we have been quickening? could you have been quickening? could they have been quickening?
Forme interro-négative
Forme simple
could I not quicken? could you not quicken? could he not quicken? could we not quicken? could you not quicken? could they not quicken?
Forme en V-ing
could I not be quickening? could you not be quickening? could he not be quickening? could we not be quickening? could you not be quickening? could they not be quickening?
Perfect
could I not have quickened? could you not have quickened? could he not have quickened? could we not have quickened? could you not have quickened? could they not have quickened?
Perfect en V-ing
could I not have been quickening? could you not have been quickening? could he not have been quickening? could we not have been quickening? could you not have been quickening? could they not have been quickening?