I could flat you could flat he could flat we could flat you could flat they could flat
Forme en V-ing
I could be flating you could be flating he could be flating we could be flating you could be flating they could be flating
Perfect
I could have flated you could have flated he could have flated we could have flated you could have flated they could have flated
Perfect en V-ing
I could have been flating you could have been flating he could have been flating we could have been flating you could have been flating they could have been flating
Négation
Forme simple
I could not flat you could not flat he could not flat we could not flat you could not flat they could not flat
Forme en V-ing
I could not be flating you could not be flating he could not be flating we could not be flating you could not be flating they could not be flating
Perfect
I could not have flated you could not have flated he could not have flated we could not have flated you could not have flated they could not have flated
Perfect en V-ing
I could not have been flating you could not have been flating he could not have been flating we could not have been flating you could not have been flating they could not have been flating
Forme interrogative
Forme simple
could I flat? could you flat? could he flat? could we flat? could you flat? could they flat?
Forme en V-ing
could I be flating? could you be flating? could he be flating? could we be flating? could you be flating? could they be flating?
Perfect
could I have flated? could you have flated? could he have flated? could we have flated? could you have flated? could they have flated?
Perfect en V-ing
could I have been flating? could you have been flating? could he have been flating? could we have been flating? could you have been flating? could they have been flating?
Forme interro-négative
Forme simple
could I not flat? could you not flat? could he not flat? could we not flat? could you not flat? could they not flat?
Forme en V-ing
could I not be flating? could you not be flating? could he not be flating? could we not be flating? could you not be flating? could they not be flating?
Perfect
could I not have flated? could you not have flated? could he not have flated? could we not have flated? could you not have flated? could they not have flated?
Perfect en V-ing
could I not have been flating? could you not have been flating? could he not have been flating? could we not have been flating? could you not have been flating? could they not have been flating?