I could dredge you could dredge he could dredge we could dredge you could dredge they could dredge
Forme en V-ing
I could be dredging you could be dredging he could be dredging we could be dredging you could be dredging they could be dredging
Perfect
I could have dredged you could have dredged he could have dredged we could have dredged you could have dredged they could have dredged
Perfect en V-ing
I could have been dredging you could have been dredging he could have been dredging we could have been dredging you could have been dredging they could have been dredging
Négation
Forme simple
I could not dredge you could not dredge he could not dredge we could not dredge you could not dredge they could not dredge
Forme en V-ing
I could not be dredging you could not be dredging he could not be dredging we could not be dredging you could not be dredging they could not be dredging
Perfect
I could not have dredged you could not have dredged he could not have dredged we could not have dredged you could not have dredged they could not have dredged
Perfect en V-ing
I could not have been dredging you could not have been dredging he could not have been dredging we could not have been dredging you could not have been dredging they could not have been dredging
Forme interrogative
Forme simple
could I dredge? could you dredge? could he dredge? could we dredge? could you dredge? could they dredge?
Forme en V-ing
could I be dredging? could you be dredging? could he be dredging? could we be dredging? could you be dredging? could they be dredging?
Perfect
could I have dredged? could you have dredged? could he have dredged? could we have dredged? could you have dredged? could they have dredged?
Perfect en V-ing
could I have been dredging? could you have been dredging? could he have been dredging? could we have been dredging? could you have been dredging? could they have been dredging?
Forme interro-négative
Forme simple
could I not dredge? could you not dredge? could he not dredge? could we not dredge? could you not dredge? could they not dredge?
Forme en V-ing
could I not be dredging? could you not be dredging? could he not be dredging? could we not be dredging? could you not be dredging? could they not be dredging?
Perfect
could I not have dredged? could you not have dredged? could he not have dredged? could we not have dredged? could you not have dredged? could they not have dredged?
Perfect en V-ing
could I not have been dredging? could you not have been dredging? could he not have been dredging? could we not have been dredging? could you not have been dredging? could they not have been dredging?