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