I must subtract you must subtract she must subtract we must subtract you must subtract they must subtract
Forme en V-ing
I must be subtracting you must be subtracting she must be subtracting we must be subtracting you must be subtracting they must be subtracting
Perfect
I must have subtracted you must have subtracted she 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 she 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 she 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 she 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 she 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 she 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 she subtract? must we subtract? must you subtract? must they subtract?
Forme en V-ing
must I be subtracting? must you be subtracting? must she be subtracting? must we be subtracting? must you be subtracting? must they be subtracting?
Perfect
must I have subtracted? must you have subtracted? must she 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 she 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 she 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 she 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 she 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 she have been subtracting? mustn't we have been subtracting? mustn't you have been subtracting? mustn't they have been subtracting?