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