I could utter you could utter he could utter we could utter you could utter they could utter
Forme en V-ing
I could be uttering you could be uttering he could be uttering we could be uttering you could be uttering they could be uttering
Perfect
I could have uttered you could have uttered he could have uttered we could have uttered you could have uttered they could have uttered
Perfect en V-ing
I could have been uttering you could have been uttering he could have been uttering we could have been uttering you could have been uttering they could have been uttering
Négation
Forme simple
I could not utter you could not utter he could not utter we could not utter you could not utter they could not utter
Forme en V-ing
I could not be uttering you could not be uttering he could not be uttering we could not be uttering you could not be uttering they could not be uttering
Perfect
I could not have uttered you could not have uttered he could not have uttered we could not have uttered you could not have uttered they could not have uttered
Perfect en V-ing
I could not have been uttering you could not have been uttering he could not have been uttering we could not have been uttering you could not have been uttering they could not have been uttering
Forme interrogative
Forme simple
could I utter? could you utter? could he utter? could we utter? could you utter? could they utter?
Forme en V-ing
could I be uttering? could you be uttering? could he be uttering? could we be uttering? could you be uttering? could they be uttering?
Perfect
could I have uttered? could you have uttered? could he have uttered? could we have uttered? could you have uttered? could they have uttered?
Perfect en V-ing
could I have been uttering? could you have been uttering? could he have been uttering? could we have been uttering? could you have been uttering? could they have been uttering?
Forme interro-négative
Forme simple
could I not utter? could you not utter? could he not utter? could we not utter? could you not utter? could they not utter?
Forme en V-ing
could I not be uttering? could you not be uttering? could he not be uttering? could we not be uttering? could you not be uttering? could they not be uttering?
Perfect
could I not have uttered? could you not have uttered? could he not have uttered? could we not have uttered? could you not have uttered? could they not have uttered?
Perfect en V-ing
could I not have been uttering? could you not have been uttering? could he not have been uttering? could we not have been uttering? could you not have been uttering? could they not have been uttering?