I could flash you could flash she could flash we could flash you could flash they could flash
Forme en V-ing
I could be flashing you could be flashing she could be flashing we could be flashing you could be flashing they could be flashing
Perfect
I could have flashed you could have flashed she could have flashed we could have flashed you could have flashed they could have flashed
Perfect en V-ing
I could have been flashing you could have been flashing she could have been flashing we could have been flashing you could have been flashing they could have been flashing
Négation
Forme simple
I could not flash you could not flash she could not flash we could not flash you could not flash they could not flash
Forme en V-ing
I could not be flashing you could not be flashing she could not be flashing we could not be flashing you could not be flashing they could not be flashing
Perfect
I could not have flashed you could not have flashed she could not have flashed we could not have flashed you could not have flashed they could not have flashed
Perfect en V-ing
I could not have been flashing you could not have been flashing she could not have been flashing we could not have been flashing you could not have been flashing they could not have been flashing
Forme interrogative
Forme simple
could I flash? could you flash? could she flash? could we flash? could you flash? could they flash?
Forme en V-ing
could I be flashing? could you be flashing? could she be flashing? could we be flashing? could you be flashing? could they be flashing?
Perfect
could I have flashed? could you have flashed? could she have flashed? could we have flashed? could you have flashed? could they have flashed?
Perfect en V-ing
could I have been flashing? could you have been flashing? could she have been flashing? could we have been flashing? could you have been flashing? could they have been flashing?
Forme interro-négative
Forme simple
could I not flash? could you not flash? could she not flash? could we not flash? could you not flash? could they not flash?
Forme en V-ing
could I not be flashing? could you not be flashing? could she not be flashing? could we not be flashing? could you not be flashing? could they not be flashing?
Perfect
could I not have flashed? could you not have flashed? could she not have flashed? could we not have flashed? could you not have flashed? could they not have flashed?
Perfect en V-ing
could I not have been flashing? could you not have been flashing? could she not have been flashing? could we not have been flashing? could you not have been flashing? could they not have been flashing?