I could cumulate you could cumulate he could cumulate we could cumulate you could cumulate they could cumulate
Forme en V-ing
I could be cumulating you could be cumulating he could be cumulating we could be cumulating you could be cumulating they could be cumulating
Perfect
I could have cumulated you could have cumulated he could have cumulated we could have cumulated you could have cumulated they could have cumulated
Perfect en V-ing
I could have been cumulating you could have been cumulating he could have been cumulating we could have been cumulating you could have been cumulating they could have been cumulating
Négation
Forme simple
I could not cumulate you could not cumulate he could not cumulate we could not cumulate you could not cumulate they could not cumulate
Forme en V-ing
I could not be cumulating you could not be cumulating he could not be cumulating we could not be cumulating you could not be cumulating they could not be cumulating
Perfect
I could not have cumulated you could not have cumulated he could not have cumulated we could not have cumulated you could not have cumulated they could not have cumulated
Perfect en V-ing
I could not have been cumulating you could not have been cumulating he could not have been cumulating we could not have been cumulating you could not have been cumulating they could not have been cumulating
Forme interrogative
Forme simple
could I cumulate? could you cumulate? could he cumulate? could we cumulate? could you cumulate? could they cumulate?
Forme en V-ing
could I be cumulating? could you be cumulating? could he be cumulating? could we be cumulating? could you be cumulating? could they be cumulating?
Perfect
could I have cumulated? could you have cumulated? could he have cumulated? could we have cumulated? could you have cumulated? could they have cumulated?
Perfect en V-ing
could I have been cumulating? could you have been cumulating? could he have been cumulating? could we have been cumulating? could you have been cumulating? could they have been cumulating?
Forme interro-négative
Forme simple
could I not cumulate? could you not cumulate? could he not cumulate? could we not cumulate? could you not cumulate? could they not cumulate?
Forme en V-ing
could I not be cumulating? could you not be cumulating? could he not be cumulating? could we not be cumulating? could you not be cumulating? could they not be cumulating?
Perfect
could I not have cumulated? could you not have cumulated? could he not have cumulated? could we not have cumulated? could you not have cumulated? could they not have cumulated?
Perfect en V-ing
could I not have been cumulating? could you not have been cumulating? could he not have been cumulating? could we not have been cumulating? could you not have been cumulating? could they not have been cumulating?