I could ultracentrifuge you could ultracentrifuge she could ultracentrifuge we could ultracentrifuge you could ultracentrifuge they could ultracentrifuge
Forme en V-ing
I could be ultracentrifuging you could be ultracentrifuging she could be ultracentrifuging we could be ultracentrifuging you could be ultracentrifuging they could be ultracentrifuging
Perfect
I could have ultracentrifuged you could have ultracentrifuged she could have ultracentrifuged we could have ultracentrifuged you could have ultracentrifuged they could have ultracentrifuged
Perfect en V-ing
I could have been ultracentrifuging you could have been ultracentrifuging she could have been ultracentrifuging we could have been ultracentrifuging you could have been ultracentrifuging they could have been ultracentrifuging
Négation
Forme simple
I could not ultracentrifuge you could not ultracentrifuge she could not ultracentrifuge we could not ultracentrifuge you could not ultracentrifuge they could not ultracentrifuge
Forme en V-ing
I could not be ultracentrifuging you could not be ultracentrifuging she could not be ultracentrifuging we could not be ultracentrifuging you could not be ultracentrifuging they could not be ultracentrifuging
Perfect
I could not have ultracentrifuged you could not have ultracentrifuged she could not have ultracentrifuged we could not have ultracentrifuged you could not have ultracentrifuged they could not have ultracentrifuged
Perfect en V-ing
I could not have been ultracentrifuging you could not have been ultracentrifuging she could not have been ultracentrifuging we could not have been ultracentrifuging you could not have been ultracentrifuging they could not have been ultracentrifuging
Forme interrogative
Forme simple
could I ultracentrifuge? could you ultracentrifuge? could she ultracentrifuge? could we ultracentrifuge? could you ultracentrifuge? could they ultracentrifuge?
Forme en V-ing
could I be ultracentrifuging? could you be ultracentrifuging? could she be ultracentrifuging? could we be ultracentrifuging? could you be ultracentrifuging? could they be ultracentrifuging?
Perfect
could I have ultracentrifuged? could you have ultracentrifuged? could she have ultracentrifuged? could we have ultracentrifuged? could you have ultracentrifuged? could they have ultracentrifuged?
Perfect en V-ing
could I have been ultracentrifuging? could you have been ultracentrifuging? could she have been ultracentrifuging? could we have been ultracentrifuging? could you have been ultracentrifuging? could they have been ultracentrifuging?
Forme interro-négative
Forme simple
could I not ultracentrifuge? could you not ultracentrifuge? could she not ultracentrifuge? could we not ultracentrifuge? could you not ultracentrifuge? could they not ultracentrifuge?
Forme en V-ing
could I not be ultracentrifuging? could you not be ultracentrifuging? could she not be ultracentrifuging? could we not be ultracentrifuging? could you not be ultracentrifuging? could they not be ultracentrifuging?
Perfect
could I not have ultracentrifuged? could you not have ultracentrifuged? could she not have ultracentrifuged? could we not have ultracentrifuged? could you not have ultracentrifuged? could they not have ultracentrifuged?
Perfect en V-ing
could I not have been ultracentrifuging? could you not have been ultracentrifuging? could she not have been ultracentrifuging? could we not have been ultracentrifuging? could you not have been ultracentrifuging? could they not have been ultracentrifuging?