I could curd you could curd she could curd we could curd you could curd they could curd
Forme en V-ing
I could be curding you could be curding she could be curding we could be curding you could be curding they could be curding
Perfect
I could have curded you could have curded she could have curded we could have curded you could have curded they could have curded
Perfect en V-ing
I could have been curding you could have been curding she could have been curding we could have been curding you could have been curding they could have been curding
Négation
Forme simple
I could not curd you could not curd she could not curd we could not curd you could not curd they could not curd
Forme en V-ing
I could not be curding you could not be curding she could not be curding we could not be curding you could not be curding they could not be curding
Perfect
I could not have curded you could not have curded she could not have curded we could not have curded you could not have curded they could not have curded
Perfect en V-ing
I could not have been curding you could not have been curding she could not have been curding we could not have been curding you could not have been curding they could not have been curding
Forme interrogative
Forme simple
could I curd? could you curd? could she curd? could we curd? could you curd? could they curd?
Forme en V-ing
could I be curding? could you be curding? could she be curding? could we be curding? could you be curding? could they be curding?
Perfect
could I have curded? could you have curded? could she have curded? could we have curded? could you have curded? could they have curded?
Perfect en V-ing
could I have been curding? could you have been curding? could she have been curding? could we have been curding? could you have been curding? could they have been curding?
Forme interro-négative
Forme simple
could I not curd? could you not curd? could she not curd? could we not curd? could you not curd? could they not curd?
Forme en V-ing
could I not be curding? could you not be curding? could she not be curding? could we not be curding? could you not be curding? could they not be curding?
Perfect
could I not have curded? could you not have curded? could she not have curded? could we not have curded? could you not have curded? could they not have curded?
Perfect en V-ing
could I not have been curding? could you not have been curding? could she not have been curding? could we not have been curding? could you not have been curding? could they not have been curding?