English verb conjugation
MUST CENTRIFUGE

Regular verb: centrifuge - centrifuged - centrifuged

Affirmation

Simple form	V-ing form
I must centrifuge you must centrifuge he must centrifuge we must centrifuge you must centrifuge they must centrifuge	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	V-ing 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	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

Negation

Simple form	V-ing form
I mustn't centrifuge you mustn't centrifuge he mustn't centrifuge we mustn't centrifuge you mustn't centrifuge they mustn't centrifuge	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	V-ing 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	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

Interrogative form

Simple form	V-ing form
must I centrifuge? must you centrifuge? must he centrifuge? must we centrifuge? must you centrifuge? must they centrifuge?	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	V-ing 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?	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?

Interro-negative form

Simple form	V-ing form
mustn't I centrifuge? mustn't you centrifuge? mustn't he centrifuge? mustn't we centrifuge? mustn't you centrifuge? mustn't they centrifuge?	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	V-ing 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?	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?