I could grey you could grey he could grey we could grey you could grey they could grey
Forme en V-ing
I could be greying you could be greying he could be greying we could be greying you could be greying they could be greying
Perfect
I could have greyed you could have greyed he could have greyed we could have greyed you could have greyed they could have greyed
Perfect en V-ing
I could have been greying you could have been greying he could have been greying we could have been greying you could have been greying they could have been greying
Négation
Forme simple
I could not grey you could not grey he could not grey we could not grey you could not grey they could not grey
Forme en V-ing
I could not be greying you could not be greying he could not be greying we could not be greying you could not be greying they could not be greying
Perfect
I could not have greyed you could not have greyed he could not have greyed we could not have greyed you could not have greyed they could not have greyed
Perfect en V-ing
I could not have been greying you could not have been greying he could not have been greying we could not have been greying you could not have been greying they could not have been greying
Forme interrogative
Forme simple
could I grey? could you grey? could he grey? could we grey? could you grey? could they grey?
Forme en V-ing
could I be greying? could you be greying? could he be greying? could we be greying? could you be greying? could they be greying?
Perfect
could I have greyed? could you have greyed? could he have greyed? could we have greyed? could you have greyed? could they have greyed?
Perfect en V-ing
could I have been greying? could you have been greying? could he have been greying? could we have been greying? could you have been greying? could they have been greying?
Forme interro-négative
Forme simple
could I not grey? could you not grey? could he not grey? could we not grey? could you not grey? could they not grey?
Forme en V-ing
could I not be greying? could you not be greying? could he not be greying? could we not be greying? could you not be greying? could they not be greying?
Perfect
could I not have greyed? could you not have greyed? could he not have greyed? could we not have greyed? could you not have greyed? could they not have greyed?
Perfect en V-ing
could I not have been greying? could you not have been greying? could he not have been greying? could we not have been greying? could you not have been greying? could they not have been greying?