I could optimise you could optimise she could optimise we could optimise you could optimise they could optimise
Forme en V-ing
I could be optimising you could be optimising she could be optimising we could be optimising you could be optimising they could be optimising
Perfect
I could have optimised you could have optimised she could have optimised we could have optimised you could have optimised they could have optimised
Perfect en V-ing
I could have been optimising you could have been optimising she could have been optimising we could have been optimising you could have been optimising they could have been optimising
Négation
Forme simple
I couldn't optimise you couldn't optimise she couldn't optimise we couldn't optimise you couldn't optimise they couldn't optimise
Forme en V-ing
I couldn't be optimising you couldn't be optimising she couldn't be optimising we couldn't be optimising you couldn't be optimising they couldn't be optimising
Perfect
I couldn't have optimised you couldn't have optimised she couldn't have optimised we couldn't have optimised you couldn't have optimised they couldn't have optimised
Perfect en V-ing
I couldn't have been optimising you couldn't have been optimising she couldn't have been optimising we couldn't have been optimising you couldn't have been optimising they couldn't have been optimising
Forme interrogative
Forme simple
could I optimise? could you optimise? could she optimise? could we optimise? could you optimise? could they optimise?
Forme en V-ing
could I be optimising? could you be optimising? could she be optimising? could we be optimising? could you be optimising? could they be optimising?
Perfect
could I have optimised? could you have optimised? could she have optimised? could we have optimised? could you have optimised? could they have optimised?
Perfect en V-ing
could I have been optimising? could you have been optimising? could she have been optimising? could we have been optimising? could you have been optimising? could they have been optimising?
Forme interro-négative
Forme simple
couldn't I optimise? couldn't you optimise? couldn't she optimise? couldn't we optimise? couldn't you optimise? couldn't they optimise?
Forme en V-ing
couldn't I be optimising? couldn't you be optimising? couldn't she be optimising? couldn't we be optimising? couldn't you be optimising? couldn't they be optimising?
Perfect
couldn't I have optimised? couldn't you have optimised? couldn't she have optimised? couldn't we have optimised? couldn't you have optimised? couldn't they have optimised?
Perfect en V-ing
couldn't I have been optimising? couldn't you have been optimising? couldn't she have been optimising? couldn't we have been optimising? couldn't you have been optimising? couldn't they have been optimising?