I could staple you could staple he could staple we could staple you could staple they could staple
Forme en V-ing
I could be stapling you could be stapling he could be stapling we could be stapling you could be stapling they could be stapling
Perfect
I could have stapled you could have stapled he could have stapled we could have stapled you could have stapled they could have stapled
Perfect en V-ing
I could have been stapling you could have been stapling he could have been stapling we could have been stapling you could have been stapling they could have been stapling
Négation
Forme simple
I could not staple you could not staple he could not staple we could not staple you could not staple they could not staple
Forme en V-ing
I could not be stapling you could not be stapling he could not be stapling we could not be stapling you could not be stapling they could not be stapling
Perfect
I could not have stapled you could not have stapled he could not have stapled we could not have stapled you could not have stapled they could not have stapled
Perfect en V-ing
I could not have been stapling you could not have been stapling he could not have been stapling we could not have been stapling you could not have been stapling they could not have been stapling
Forme interrogative
Forme simple
could I staple? could you staple? could he staple? could we staple? could you staple? could they staple?
Forme en V-ing
could I be stapling? could you be stapling? could he be stapling? could we be stapling? could you be stapling? could they be stapling?
Perfect
could I have stapled? could you have stapled? could he have stapled? could we have stapled? could you have stapled? could they have stapled?
Perfect en V-ing
could I have been stapling? could you have been stapling? could he have been stapling? could we have been stapling? could you have been stapling? could they have been stapling?
Forme interro-négative
Forme simple
could I not staple? could you not staple? could he not staple? could we not staple? could you not staple? could they not staple?
Forme en V-ing
could I not be stapling? could you not be stapling? could he not be stapling? could we not be stapling? could you not be stapling? could they not be stapling?
Perfect
could I not have stapled? could you not have stapled? could he not have stapled? could we not have stapled? could you not have stapled? could they not have stapled?
Perfect en V-ing
could I not have been stapling? could you not have been stapling? could he not have been stapling? could we not have been stapling? could you not have been stapling? could they not have been stapling?