I could french-polish you could french-polish she could french-polish we could french-polish you could french-polish they could french-polish
Forme en V-ing
I could be french-polishing you could be french-polishing she could be french-polishing we could be french-polishing you could be french-polishing they could be french-polishing
Perfect
I could have french-polished you could have french-polished she could have french-polished we could have french-polished you could have french-polished they could have french-polished
Perfect en V-ing
I could have been french-polishing you could have been french-polishing she could have been french-polishing we could have been french-polishing you could have been french-polishing they could have been french-polishing
Négation
Forme simple
I could not french-polish you could not french-polish she could not french-polish we could not french-polish you could not french-polish they could not french-polish
Forme en V-ing
I could not be french-polishing you could not be french-polishing she could not be french-polishing we could not be french-polishing you could not be french-polishing they could not be french-polishing
Perfect
I could not have french-polished you could not have french-polished she could not have french-polished we could not have french-polished you could not have french-polished they could not have french-polished
Perfect en V-ing
I could not have been french-polishing you could not have been french-polishing she could not have been french-polishing we could not have been french-polishing you could not have been french-polishing they could not have been french-polishing
Forme interrogative
Forme simple
could I french-polish? could you french-polish? could she french-polish? could we french-polish? could you french-polish? could they french-polish?
Forme en V-ing
could I be french-polishing? could you be french-polishing? could she be french-polishing? could we be french-polishing? could you be french-polishing? could they be french-polishing?
Perfect
could I have french-polished? could you have french-polished? could she have french-polished? could we have french-polished? could you have french-polished? could they have french-polished?
Perfect en V-ing
could I have been french-polishing? could you have been french-polishing? could she have been french-polishing? could we have been french-polishing? could you have been french-polishing? could they have been french-polishing?
Forme interro-négative
Forme simple
could I not french-polish? could you not french-polish? could she not french-polish? could we not french-polish? could you not french-polish? could they not french-polish?
Forme en V-ing
could I not be french-polishing? could you not be french-polishing? could she not be french-polishing? could we not be french-polishing? could you not be french-polishing? could they not be french-polishing?
Perfect
could I not have french-polished? could you not have french-polished? could she not have french-polished? could we not have french-polished? could you not have french-polished? could they not have french-polished?
Perfect en V-ing
could I not have been french-polishing? could you not have been french-polishing? could she not have been french-polishing? could we not have been french-polishing? could you not have been french-polishing? could they not have been french-polishing?