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 couldn't kipper you couldn't kipper he couldn't kipper we couldn't kipper you couldn't kipper they couldn't kipper
Forme en V-ing
I couldn't be kippering you couldn't be kippering he couldn't be kippering we couldn't be kippering you couldn't be kippering they couldn't be kippering
Perfect
I couldn't have kippered you couldn't have kippered he couldn't have kippered we couldn't have kippered you couldn't have kippered they couldn't have kippered
Perfect en V-ing
I couldn't have been kippering you couldn't have been kippering he couldn't have been kippering we couldn't have been kippering you couldn't have been kippering they couldn't 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
couldn't I kipper? couldn't you kipper? couldn't he kipper? couldn't we kipper? couldn't you kipper? couldn't they kipper?
Forme en V-ing
couldn't I be kippering? couldn't you be kippering? couldn't he be kippering? couldn't we be kippering? couldn't you be kippering? couldn't they be kippering?
Perfect
couldn't I have kippered? couldn't you have kippered? couldn't he have kippered? couldn't we have kippered? couldn't you have kippered? couldn't they have kippered?
Perfect en V-ing
couldn't I have been kippering? couldn't you have been kippering? couldn't he have been kippering? couldn't we have been kippering? couldn't you have been kippering? couldn't they have been kippering?