I could kipper you could kipper he could kipper we could kipper you could kipper they could kipper
Forme en V-ing
I could be kippering you could be kippering he could be kippering we could be kippering you could be kippering they could be kippering
Perfect
I could have kippered you could have kippered he could have kippered we could have kippered you could have kippered they could have kippered
Perfect en V-ing
I could have been kippering you could have been kippering he could have been kippering we could have been kippering you could have been kippering they could have been kippering
Négation
Forme simple
I could not kipper you could not kipper he could not kipper we could not kipper you could not kipper they could not kipper
Forme en V-ing
I could not be kippering you could not be kippering he could not be kippering we could not be kippering you could not be kippering they could not be kippering
Perfect
I could not have kippered you could not have kippered he could not have kippered we could not have kippered you could not have kippered they could not have kippered
Perfect en V-ing
I could not have been kippering you could not have been kippering he could not have been kippering we could not have been kippering you could not have been kippering they could not have been kippering
Forme interrogative
Forme simple
could I kipper? could you kipper? could he kipper? could we kipper? could you kipper? could they kipper?
Forme en V-ing
could I be kippering? could you be kippering? could he be kippering? could we be kippering? could you be kippering? could they be kippering?
Perfect
could I have kippered? could you have kippered? could he have kippered? could we have kippered? could you have kippered? could they have kippered?
Perfect en V-ing
could I have been kippering? could you have been kippering? could he have been kippering? could we have been kippering? could you have been kippering? could they have been kippering?
Forme interro-négative
Forme simple
could I not kipper? could you not kipper? could he not kipper? could we not kipper? could you not kipper? could they not kipper?
Forme en V-ing
could I not be kippering? could you not be kippering? could he not be kippering? could we not be kippering? could you not be kippering? could they not be kippering?
Perfect
could I not have kippered? could you not have kippered? could he not have kippered? could we not have kippered? could you not have kippered? could they not have kippered?
Perfect en V-ing
could I not have been kippering? could you not have been kippering? could he not have been kippering? could we not have been kippering? could you not have been kippering? could they not have been kippering?