I could teleconference you could teleconference he could teleconference we could teleconference you could teleconference they could teleconference
Forme en V-ing
I could be teleconferencing you could be teleconferencing he could be teleconferencing we could be teleconferencing you could be teleconferencing they could be teleconferencing
Perfect
I could have teleconferenced you could have teleconferenced he could have teleconferenced we could have teleconferenced you could have teleconferenced they could have teleconferenced
Perfect en V-ing
I could have been teleconferencing you could have been teleconferencing he could have been teleconferencing we could have been teleconferencing you could have been teleconferencing they could have been teleconferencing
Négation
Forme simple
I couldn't teleconference you couldn't teleconference he couldn't teleconference we couldn't teleconference you couldn't teleconference they couldn't teleconference
Forme en V-ing
I couldn't be teleconferencing you couldn't be teleconferencing he couldn't be teleconferencing we couldn't be teleconferencing you couldn't be teleconferencing they couldn't be teleconferencing
Perfect
I couldn't have teleconferenced you couldn't have teleconferenced he couldn't have teleconferenced we couldn't have teleconferenced you couldn't have teleconferenced they couldn't have teleconferenced
Perfect en V-ing
I couldn't have been teleconferencing you couldn't have been teleconferencing he couldn't have been teleconferencing we couldn't have been teleconferencing you couldn't have been teleconferencing they couldn't have been teleconferencing
Forme interrogative
Forme simple
could I teleconference? could you teleconference? could he teleconference? could we teleconference? could you teleconference? could they teleconference?
Forme en V-ing
could I be teleconferencing? could you be teleconferencing? could he be teleconferencing? could we be teleconferencing? could you be teleconferencing? could they be teleconferencing?
Perfect
could I have teleconferenced? could you have teleconferenced? could he have teleconferenced? could we have teleconferenced? could you have teleconferenced? could they have teleconferenced?
Perfect en V-ing
could I have been teleconferencing? could you have been teleconferencing? could he have been teleconferencing? could we have been teleconferencing? could you have been teleconferencing? could they have been teleconferencing?
Forme interro-négative
Forme simple
couldn't I teleconference? couldn't you teleconference? couldn't he teleconference? couldn't we teleconference? couldn't you teleconference? couldn't they teleconference?
Forme en V-ing
couldn't I be teleconferencing? couldn't you be teleconferencing? couldn't he be teleconferencing? couldn't we be teleconferencing? couldn't you be teleconferencing? couldn't they be teleconferencing?
Perfect
couldn't I have teleconferenced? couldn't you have teleconferenced? couldn't he have teleconferenced? couldn't we have teleconferenced? couldn't you have teleconferenced? couldn't they have teleconferenced?
Perfect en V-ing
couldn't I have been teleconferencing? couldn't you have been teleconferencing? couldn't he have been teleconferencing? couldn't we have been teleconferencing? couldn't you have been teleconferencing? couldn't they have been teleconferencing?