I could shriek you could shriek she could shriek we could shriek you could shriek they could shriek
Forme en V-ing
I could be shrieking you could be shrieking she could be shrieking we could be shrieking you could be shrieking they could be shrieking
Perfect
I could have shrieked you could have shrieked she could have shrieked we could have shrieked you could have shrieked they could have shrieked
Perfect en V-ing
I could have been shrieking you could have been shrieking she could have been shrieking we could have been shrieking you could have been shrieking they could have been shrieking
Négation
Forme simple
I could not shriek you could not shriek she could not shriek we could not shriek you could not shriek they could not shriek
Forme en V-ing
I could not be shrieking you could not be shrieking she could not be shrieking we could not be shrieking you could not be shrieking they could not be shrieking
Perfect
I could not have shrieked you could not have shrieked she could not have shrieked we could not have shrieked you could not have shrieked they could not have shrieked
Perfect en V-ing
I could not have been shrieking you could not have been shrieking she could not have been shrieking we could not have been shrieking you could not have been shrieking they could not have been shrieking
Forme interrogative
Forme simple
could I shriek? could you shriek? could she shriek? could we shriek? could you shriek? could they shriek?
Forme en V-ing
could I be shrieking? could you be shrieking? could she be shrieking? could we be shrieking? could you be shrieking? could they be shrieking?
Perfect
could I have shrieked? could you have shrieked? could she have shrieked? could we have shrieked? could you have shrieked? could they have shrieked?
Perfect en V-ing
could I have been shrieking? could you have been shrieking? could she have been shrieking? could we have been shrieking? could you have been shrieking? could they have been shrieking?
Forme interro-négative
Forme simple
could I not shriek? could you not shriek? could she not shriek? could we not shriek? could you not shriek? could they not shriek?
Forme en V-ing
could I not be shrieking? could you not be shrieking? could she not be shrieking? could we not be shrieking? could you not be shrieking? could they not be shrieking?
Perfect
could I not have shrieked? could you not have shrieked? could she not have shrieked? could we not have shrieked? could you not have shrieked? could they not have shrieked?
Perfect en V-ing
could I not have been shrieking? could you not have been shrieking? could she not have been shrieking? could we not have been shrieking? could you not have been shrieking? could they not have been shrieking?