I could ump you could ump he could ump we could ump you could ump they could ump
Forme en V-ing
I could be umping you could be umping he could be umping we could be umping you could be umping they could be umping
Perfect
I could have umped you could have umped he could have umped we could have umped you could have umped they could have umped
Perfect en V-ing
I could have been umping you could have been umping he could have been umping we could have been umping you could have been umping they could have been umping
Négation
Forme simple
I could not ump you could not ump he could not ump we could not ump you could not ump they could not ump
Forme en V-ing
I could not be umping you could not be umping he could not be umping we could not be umping you could not be umping they could not be umping
Perfect
I could not have umped you could not have umped he could not have umped we could not have umped you could not have umped they could not have umped
Perfect en V-ing
I could not have been umping you could not have been umping he could not have been umping we could not have been umping you could not have been umping they could not have been umping
Forme interrogative
Forme simple
could I ump? could you ump? could he ump? could we ump? could you ump? could they ump?
Forme en V-ing
could I be umping? could you be umping? could he be umping? could we be umping? could you be umping? could they be umping?
Perfect
could I have umped? could you have umped? could he have umped? could we have umped? could you have umped? could they have umped?
Perfect en V-ing
could I have been umping? could you have been umping? could he have been umping? could we have been umping? could you have been umping? could they have been umping?
Forme interro-négative
Forme simple
could I not ump? could you not ump? could he not ump? could we not ump? could you not ump? could they not ump?
Forme en V-ing
could I not be umping? could you not be umping? could he not be umping? could we not be umping? could you not be umping? could they not be umping?
Perfect
could I not have umped? could you not have umped? could he not have umped? could we not have umped? could you not have umped? could they not have umped?
Perfect en V-ing
could I not have been umping? could you not have been umping? could he not have been umping? could we not have been umping? could you not have been umping? could they not have been umping?