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 couldn't utter you couldn't utter he couldn't utter we couldn't utter you couldn't utter they couldn't utter
Forme en V-ing
I couldn't be uttering you couldn't be uttering he couldn't be uttering we couldn't be uttering you couldn't be uttering they couldn't be uttering
Perfect
I couldn't have uttered you couldn't have uttered he couldn't have uttered we couldn't have uttered you couldn't have uttered they couldn't have uttered
Perfect en V-ing
I couldn't have been uttering you couldn't have been uttering he couldn't have been uttering we couldn't have been uttering you couldn't have been uttering they couldn't 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
couldn't I utter? couldn't you utter? couldn't he utter? couldn't we utter? couldn't you utter? couldn't they utter?
Forme en V-ing
couldn't I be uttering? couldn't you be uttering? couldn't he be uttering? couldn't we be uttering? couldn't you be uttering? couldn't they be uttering?
Perfect
couldn't I have uttered? couldn't you have uttered? couldn't he have uttered? couldn't we have uttered? couldn't you have uttered? couldn't they have uttered?
Perfect en V-ing
couldn't I have been uttering? couldn't you have been uttering? couldn't he have been uttering? couldn't we have been uttering? couldn't you have been uttering? couldn't they have been uttering?