I could derai you could derai he could derai we could derai you could derai they could derai
Forme en V-ing
I could be deraiing you could be deraiing he could be deraiing we could be deraiing you could be deraiing they could be deraiing
Perfect
I could have deraied you could have deraied he could have deraied we could have deraied you could have deraied they could have deraied
Perfect en V-ing
I could have been deraiing you could have been deraiing he could have been deraiing we could have been deraiing you could have been deraiing they could have been deraiing
Négation
Forme simple
I could not derai you could not derai he could not derai we could not derai you could not derai they could not derai
Forme en V-ing
I could not be deraiing you could not be deraiing he could not be deraiing we could not be deraiing you could not be deraiing they could not be deraiing
Perfect
I could not have deraied you could not have deraied he could not have deraied we could not have deraied you could not have deraied they could not have deraied
Perfect en V-ing
I could not have been deraiing you could not have been deraiing he could not have been deraiing we could not have been deraiing you could not have been deraiing they could not have been deraiing
Forme interrogative
Forme simple
could I derai? could you derai? could he derai? could we derai? could you derai? could they derai?
Forme en V-ing
could I be deraiing? could you be deraiing? could he be deraiing? could we be deraiing? could you be deraiing? could they be deraiing?
Perfect
could I have deraied? could you have deraied? could he have deraied? could we have deraied? could you have deraied? could they have deraied?
Perfect en V-ing
could I have been deraiing? could you have been deraiing? could he have been deraiing? could we have been deraiing? could you have been deraiing? could they have been deraiing?
Forme interro-négative
Forme simple
could I not derai? could you not derai? could he not derai? could we not derai? could you not derai? could they not derai?
Forme en V-ing
could I not be deraiing? could you not be deraiing? could he not be deraiing? could we not be deraiing? could you not be deraiing? could they not be deraiing?
Perfect
could I not have deraied? could you not have deraied? could he not have deraied? could we not have deraied? could you not have deraied? could they not have deraied?
Perfect en V-ing
could I not have been deraiing? could you not have been deraiing? could he not have been deraiing? could we not have been deraiing? could you not have been deraiing? could they not have been deraiing?