I could wall you could wall he could wall we could wall you could wall they could wall
Forme en V-ing
I could be walling you could be walling he could be walling we could be walling you could be walling they could be walling
Perfect
I could have walled you could have walled he could have walled we could have walled you could have walled they could have walled
Perfect en V-ing
I could have been walling you could have been walling he could have been walling we could have been walling you could have been walling they could have been walling
Négation
Forme simple
I couldn't wall you couldn't wall he couldn't wall we couldn't wall you couldn't wall they couldn't wall
Forme en V-ing
I couldn't be walling you couldn't be walling he couldn't be walling we couldn't be walling you couldn't be walling they couldn't be walling
Perfect
I couldn't have walled you couldn't have walled he couldn't have walled we couldn't have walled you couldn't have walled they couldn't have walled
Perfect en V-ing
I couldn't have been walling you couldn't have been walling he couldn't have been walling we couldn't have been walling you couldn't have been walling they couldn't have been walling
Forme interrogative
Forme simple
could I wall? could you wall? could he wall? could we wall? could you wall? could they wall?
Forme en V-ing
could I be walling? could you be walling? could he be walling? could we be walling? could you be walling? could they be walling?
Perfect
could I have walled? could you have walled? could he have walled? could we have walled? could you have walled? could they have walled?
Perfect en V-ing
could I have been walling? could you have been walling? could he have been walling? could we have been walling? could you have been walling? could they have been walling?
Forme interro-négative
Forme simple
couldn't I wall? couldn't you wall? couldn't he wall? couldn't we wall? couldn't you wall? couldn't they wall?
Forme en V-ing
couldn't I be walling? couldn't you be walling? couldn't he be walling? couldn't we be walling? couldn't you be walling? couldn't they be walling?
Perfect
couldn't I have walled? couldn't you have walled? couldn't he have walled? couldn't we have walled? couldn't you have walled? couldn't they have walled?
Perfect en V-ing
couldn't I have been walling? couldn't you have been walling? couldn't he have been walling? couldn't we have been walling? couldn't you have been walling? couldn't they have been walling?