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