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