I could weaken you could weaken he could weaken we could weaken you could weaken they could weaken
Forme en V-ing
I could be weakening you could be weakening he could be weakening we could be weakening you could be weakening they could be weakening
Perfect
I could have weakened you could have weakened he could have weakened we could have weakened you could have weakened they could have weakened
Perfect en V-ing
I could have been weakening you could have been weakening he could have been weakening we could have been weakening you could have been weakening they could have been weakening
Négation
Forme simple
I could not weaken you could not weaken he could not weaken we could not weaken you could not weaken they could not weaken
Forme en V-ing
I could not be weakening you could not be weakening he could not be weakening we could not be weakening you could not be weakening they could not be weakening
Perfect
I could not have weakened you could not have weakened he could not have weakened we could not have weakened you could not have weakened they could not have weakened
Perfect en V-ing
I could not have been weakening you could not have been weakening he could not have been weakening we could not have been weakening you could not have been weakening they could not have been weakening
Forme interrogative
Forme simple
could I weaken? could you weaken? could he weaken? could we weaken? could you weaken? could they weaken?
Forme en V-ing
could I be weakening? could you be weakening? could he be weakening? could we be weakening? could you be weakening? could they be weakening?
Perfect
could I have weakened? could you have weakened? could he have weakened? could we have weakened? could you have weakened? could they have weakened?
Perfect en V-ing
could I have been weakening? could you have been weakening? could he have been weakening? could we have been weakening? could you have been weakening? could they have been weakening?
Forme interro-négative
Forme simple
could I not weaken? could you not weaken? could he not weaken? could we not weaken? could you not weaken? could they not weaken?
Forme en V-ing
could I not be weakening? could you not be weakening? could he not be weakening? could we not be weakening? could you not be weakening? could they not be weakening?
Perfect
could I not have weakened? could you not have weakened? could he not have weakened? could we not have weakened? could you not have weakened? could they not have weakened?
Perfect en V-ing
could I not have been weakening? could you not have been weakening? could he not have been weakening? could we not have been weakening? could you not have been weakening? could they not have been weakening?