I could prefix you could prefix she could prefix we could prefix you could prefix they could prefix
Forme en V-ing
I could be prefixing you could be prefixing she could be prefixing we could be prefixing you could be prefixing they could be prefixing
Perfect
I could have prefixed you could have prefixed she could have prefixed we could have prefixed you could have prefixed they could have prefixed
Perfect en V-ing
I could have been prefixing you could have been prefixing she could have been prefixing we could have been prefixing you could have been prefixing they could have been prefixing
Négation
Forme simple
I could not prefix you could not prefix she could not prefix we could not prefix you could not prefix they could not prefix
Forme en V-ing
I could not be prefixing you could not be prefixing she could not be prefixing we could not be prefixing you could not be prefixing they could not be prefixing
Perfect
I could not have prefixed you could not have prefixed she could not have prefixed we could not have prefixed you could not have prefixed they could not have prefixed
Perfect en V-ing
I could not have been prefixing you could not have been prefixing she could not have been prefixing we could not have been prefixing you could not have been prefixing they could not have been prefixing
Forme interrogative
Forme simple
could I prefix? could you prefix? could she prefix? could we prefix? could you prefix? could they prefix?
Forme en V-ing
could I be prefixing? could you be prefixing? could she be prefixing? could we be prefixing? could you be prefixing? could they be prefixing?
Perfect
could I have prefixed? could you have prefixed? could she have prefixed? could we have prefixed? could you have prefixed? could they have prefixed?
Perfect en V-ing
could I have been prefixing? could you have been prefixing? could she have been prefixing? could we have been prefixing? could you have been prefixing? could they have been prefixing?
Forme interro-négative
Forme simple
could I not prefix? could you not prefix? could she not prefix? could we not prefix? could you not prefix? could they not prefix?
Forme en V-ing
could I not be prefixing? could you not be prefixing? could she not be prefixing? could we not be prefixing? could you not be prefixing? could they not be prefixing?
Perfect
could I not have prefixed? could you not have prefixed? could she not have prefixed? could we not have prefixed? could you not have prefixed? could they not have prefixed?
Perfect en V-ing
could I not have been prefixing? could you not have been prefixing? could she not have been prefixing? could we not have been prefixing? could you not have been prefixing? could they not have been prefixing?