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