I could forestall you could forestall he could forestall we could forestall you could forestall they could forestall
Forme en V-ing
I could be forestalling you could be forestalling he could be forestalling we could be forestalling you could be forestalling they could be forestalling
Perfect
I could have forestalled you could have forestalled he could have forestalled we could have forestalled you could have forestalled they could have forestalled
Perfect en V-ing
I could have been forestalling you could have been forestalling he could have been forestalling we could have been forestalling you could have been forestalling they could have been forestalling
Négation
Forme simple
I could not forestall you could not forestall he could not forestall we could not forestall you could not forestall they could not forestall
Forme en V-ing
I could not be forestalling you could not be forestalling he could not be forestalling we could not be forestalling you could not be forestalling they could not be forestalling
Perfect
I could not have forestalled you could not have forestalled he could not have forestalled we could not have forestalled you could not have forestalled they could not have forestalled
Perfect en V-ing
I could not have been forestalling you could not have been forestalling he could not have been forestalling we could not have been forestalling you could not have been forestalling they could not have been forestalling
Forme interrogative
Forme simple
could I forestall? could you forestall? could he forestall? could we forestall? could you forestall? could they forestall?
Forme en V-ing
could I be forestalling? could you be forestalling? could he be forestalling? could we be forestalling? could you be forestalling? could they be forestalling?
Perfect
could I have forestalled? could you have forestalled? could he have forestalled? could we have forestalled? could you have forestalled? could they have forestalled?
Perfect en V-ing
could I have been forestalling? could you have been forestalling? could he have been forestalling? could we have been forestalling? could you have been forestalling? could they have been forestalling?
Forme interro-négative
Forme simple
could I not forestall? could you not forestall? could he not forestall? could we not forestall? could you not forestall? could they not forestall?
Forme en V-ing
could I not be forestalling? could you not be forestalling? could he not be forestalling? could we not be forestalling? could you not be forestalling? could they not be forestalling?
Perfect
could I not have forestalled? could you not have forestalled? could he not have forestalled? could we not have forestalled? could you not have forestalled? could they not have forestalled?
Perfect en V-ing
could I not have been forestalling? could you not have been forestalling? could he not have been forestalling? could we not have been forestalling? could you not have been forestalling? could they not have been forestalling?