I could degenerate you could degenerate he could degenerate we could degenerate you could degenerate they could degenerate
Forme en V-ing
I could be degenerating you could be degenerating he could be degenerating we could be degenerating you could be degenerating they could be degenerating
Perfect
I could have degenerated you could have degenerated he could have degenerated we could have degenerated you could have degenerated they could have degenerated
Perfect en V-ing
I could have been degenerating you could have been degenerating he could have been degenerating we could have been degenerating you could have been degenerating they could have been degenerating
Négation
Forme simple
I could not degenerate you could not degenerate he could not degenerate we could not degenerate you could not degenerate they could not degenerate
Forme en V-ing
I could not be degenerating you could not be degenerating he could not be degenerating we could not be degenerating you could not be degenerating they could not be degenerating
Perfect
I could not have degenerated you could not have degenerated he could not have degenerated we could not have degenerated you could not have degenerated they could not have degenerated
Perfect en V-ing
I could not have been degenerating you could not have been degenerating he could not have been degenerating we could not have been degenerating you could not have been degenerating they could not have been degenerating
Forme interrogative
Forme simple
could I degenerate? could you degenerate? could he degenerate? could we degenerate? could you degenerate? could they degenerate?
Forme en V-ing
could I be degenerating? could you be degenerating? could he be degenerating? could we be degenerating? could you be degenerating? could they be degenerating?
Perfect
could I have degenerated? could you have degenerated? could he have degenerated? could we have degenerated? could you have degenerated? could they have degenerated?
Perfect en V-ing
could I have been degenerating? could you have been degenerating? could he have been degenerating? could we have been degenerating? could you have been degenerating? could they have been degenerating?
Forme interro-négative
Forme simple
could I not degenerate? could you not degenerate? could he not degenerate? could we not degenerate? could you not degenerate? could they not degenerate?
Forme en V-ing
could I not be degenerating? could you not be degenerating? could he not be degenerating? could we not be degenerating? could you not be degenerating? could they not be degenerating?
Perfect
could I not have degenerated? could you not have degenerated? could he not have degenerated? could we not have degenerated? could you not have degenerated? could they not have degenerated?
Perfect en V-ing
could I not have been degenerating? could you not have been degenerating? could he not have been degenerating? could we not have been degenerating? could you not have been degenerating? could they not have been degenerating?