could centrifuge
Verbe régulier : centrifuge - centrifuged- centrifuged
Traduction française : centrifuger 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could centrifuge
you could centrifuge
he could centrifuge
we could centrifuge
you could centrifuge
they could centrifuge 	I could be centrifuging
you could be centrifuging
he could be centrifuging
we could be centrifuging
you could be centrifuging
they could be centrifuging	I could have centrifuged
you could have centrifuged
he could have centrifuged
we could have centrifuged
you could have centrifuged
they could have centrifuged	I could have been centrifuging
you could have been centrifuging
he could have been centrifuging
we could have been centrifuging
you could have been centrifuging
they could have been centrifuging	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't centrifuge
you couldn't centrifuge
he couldn't centrifuge
we couldn't centrifuge
you couldn't centrifuge
they couldn't centrifuge 	I couldn't be centrifuging
you couldn't be centrifuging
he couldn't be centrifuging
we couldn't be centrifuging
you couldn't be centrifuging
they couldn't be centrifuging	I couldn't have centrifuged
you couldn't have centrifuged
he couldn't have centrifuged
we couldn't have centrifuged
you couldn't have centrifuged
they couldn't have centrifuged	I couldn't have been centrifuging
you couldn't have been centrifuging
he couldn't have been centrifuging
we couldn't have been centrifuging
you couldn't have been centrifuging
they couldn't have been centrifuging	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I centrifuge?
could you centrifuge?
could he centrifuge?
could we centrifuge?
could you centrifuge?
could they centrifuge? 	could I be centrifuging?
could you be centrifuging?
could he be centrifuging?
could we be centrifuging?
could you be centrifuging?
could they be centrifuging? 	could I have centrifuged?
could you have centrifuged?
could he have centrifuged?
could we have centrifuged?
could you have centrifuged?
could they have centrifuged? 	could I have been centrifuging?
could you have been centrifuging?
could he have been centrifuging?
could we have been centrifuging?
could you have been centrifuging?
could they have been centrifuging? 	

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