I could isle you could isle he could isle we could isle you could isle they could isle
Forme en V-ing
I could be isling you could be isling he could be isling we could be isling you could be isling they could be isling
Perfect
I could have isled you could have isled he could have isled we could have isled you could have isled they could have isled
Perfect en V-ing
I could have been isling you could have been isling he could have been isling we could have been isling you could have been isling they could have been isling
Négation
Forme simple
I couldn't isle you couldn't isle he couldn't isle we couldn't isle you couldn't isle they couldn't isle
Forme en V-ing
I couldn't be isling you couldn't be isling he couldn't be isling we couldn't be isling you couldn't be isling they couldn't be isling
Perfect
I couldn't have isled you couldn't have isled he couldn't have isled we couldn't have isled you couldn't have isled they couldn't have isled
Perfect en V-ing
I couldn't have been isling you couldn't have been isling he couldn't have been isling we couldn't have been isling you couldn't have been isling they couldn't have been isling
Forme interrogative
Forme simple
could I isle? could you isle? could he isle? could we isle? could you isle? could they isle?
Forme en V-ing
could I be isling? could you be isling? could he be isling? could we be isling? could you be isling? could they be isling?
Perfect
could I have isled? could you have isled? could he have isled? could we have isled? could you have isled? could they have isled?
Perfect en V-ing
could I have been isling? could you have been isling? could he have been isling? could we have been isling? could you have been isling? could they have been isling?
Forme interro-négative
Forme simple
couldn't I isle? couldn't you isle? couldn't he isle? couldn't we isle? couldn't you isle? couldn't they isle?
Forme en V-ing
couldn't I be isling? couldn't you be isling? couldn't he be isling? couldn't we be isling? couldn't you be isling? couldn't they be isling?
Perfect
couldn't I have isled? couldn't you have isled? couldn't he have isled? couldn't we have isled? couldn't you have isled? couldn't they have isled?
Perfect en V-ing
couldn't I have been isling? couldn't you have been isling? couldn't he have been isling? couldn't we have been isling? couldn't you have been isling? couldn't they have been isling?