I must subtract you must subtract he must subtract we must subtract you must subtract they must subtract
Forme en V-ing
I must be subtracting you must be subtracting he must be subtracting we must be subtracting you must be subtracting they must be subtracting
Perfect
I must have subtracted you must have subtracted he must have subtracted we must have subtracted you must have subtracted they must have subtracted
Perfect en V-ing
I must have been subtracting you must have been subtracting he must have been subtracting we must have been subtracting you must have been subtracting they must have been subtracting
Négation
Forme simple
I mustn't subtract you mustn't subtract he mustn't subtract we mustn't subtract you mustn't subtract they mustn't subtract
Forme en V-ing
I mustn't be subtracting you mustn't be subtracting he mustn't be subtracting we mustn't be subtracting you mustn't be subtracting they mustn't be subtracting
Perfect
I mustn't have subtracted you mustn't have subtracted he mustn't have subtracted we mustn't have subtracted you mustn't have subtracted they mustn't have subtracted
Perfect en V-ing
I mustn't have been subtracting you mustn't have been subtracting he mustn't have been subtracting we mustn't have been subtracting you mustn't have been subtracting they mustn't have been subtracting
Forme interrogative
Forme simple
must I subtract? must you subtract? must he subtract? must we subtract? must you subtract? must they subtract?
Forme en V-ing
must I be subtracting? must you be subtracting? must he be subtracting? must we be subtracting? must you be subtracting? must they be subtracting?
Perfect
must I have subtracted? must you have subtracted? must he have subtracted? must we have subtracted? must you have subtracted? must they have subtracted?
Perfect en V-ing
must I have been subtracting? must you have been subtracting? must he have been subtracting? must we have been subtracting? must you have been subtracting? must they have been subtracting?
Forme interro-négative
Forme simple
mustn't I subtract? mustn't you subtract? mustn't he subtract? mustn't we subtract? mustn't you subtract? mustn't they subtract?
Forme en V-ing
mustn't I be subtracting? mustn't you be subtracting? mustn't he be subtracting? mustn't we be subtracting? mustn't you be subtracting? mustn't they be subtracting?
Perfect
mustn't I have subtracted? mustn't you have subtracted? mustn't he have subtracted? mustn't we have subtracted? mustn't you have subtracted? mustn't they have subtracted?
Perfect en V-ing
mustn't I have been subtracting? mustn't you have been subtracting? mustn't he have been subtracting? mustn't we have been subtracting? mustn't you have been subtracting? mustn't they have been subtracting?