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 must not centrifuge you must not centrifuge he must not centrifuge we must not centrifuge you must not centrifuge they must not centrifuge
Forme en V-ing
I must not be centrifuging you must not be centrifuging he must not be centrifuging we must not be centrifuging you must not be centrifuging they must not be centrifuging
Perfect
I must not have centrifuged you must not have centrifuged he must not have centrifuged we must not have centrifuged you must not have centrifuged they must not have centrifuged
Perfect en V-ing
I must not have been centrifuging you must not have been centrifuging he must not have been centrifuging we must not have been centrifuging you must not have been centrifuging they must not 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
must I not centrifuge? must you not centrifuge? must he not centrifuge? must we not centrifuge? must you not centrifuge? must they not centrifuge?
Forme en V-ing
must I not be centrifuging? must you not be centrifuging? must he not be centrifuging? must we not be centrifuging? must you not be centrifuging? must they not be centrifuging?
Perfect
must I not have centrifuged? must you not have centrifuged? must he not have centrifuged? must we not have centrifuged? must you not have centrifuged? must they not have centrifuged?
Perfect en V-ing
must I not have been centrifuging? must you not have been centrifuging? must he not have been centrifuging? must we not have been centrifuging? must you not have been centrifuging? must they not have been centrifuging?