Regular verb: centrifuge - centrifuged - centrifuged
Simple form | V-ing form |
I could centrifuge you could centrifuge she could centrifuge we could centrifuge you could centrifuge they could centrifuge | I could be centrifuging you could be centrifuging she could be centrifuging we could be centrifuging you could be centrifuging they could be centrifuging |
Perfect | V-ing perfect |
I could have centrifuged you could have centrifuged she 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 she could have been centrifuging we could have been centrifuging you could have been centrifuging they could have been centrifuging |
Simple form | V-ing form |
I could not centrifuge you could not centrifuge she could not centrifuge we could not centrifuge you could not centrifuge they could not centrifuge | I could not be centrifuging you could not be centrifuging she could not be centrifuging we could not be centrifuging you could not be centrifuging they could not be centrifuging |
Perfect | V-ing perfect |
I could not have centrifuged you could not have centrifuged she could not have centrifuged we could not have centrifuged you could not have centrifuged they could not have centrifuged | I could not have been centrifuging you could not have been centrifuging she could not have been centrifuging we could not have been centrifuging you could not have been centrifuging they could not have been centrifuging |
Simple form | V-ing form |
could I centrifuge? could you centrifuge? could she centrifuge? could we centrifuge? could you centrifuge? could they centrifuge? | could I be centrifuging? could you be centrifuging? could she be centrifuging? could we be centrifuging? could you be centrifuging? could they be centrifuging? |
Perfect | V-ing perfect |
could I have centrifuged? could you have centrifuged? could she 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 she have been centrifuging? could we have been centrifuging? could you have been centrifuging? could they have been centrifuging? |
Simple form | V-ing form |
could I not centrifuge? could you not centrifuge? could she not centrifuge? could we not centrifuge? could you not centrifuge? could they not centrifuge? | could I not be centrifuging? could you not be centrifuging? could she not be centrifuging? could we not be centrifuging? could you not be centrifuging? could they not be centrifuging? |
Perfect | V-ing perfect |
could I not have centrifuged? could you not have centrifuged? could she not have centrifuged? could we not have centrifuged? could you not have centrifuged? could they not have centrifuged? | could I not have been centrifuging? could you not have been centrifuging? could she not have been centrifuging? could we not have been centrifuging? could you not have been centrifuging? could they not have been centrifuging? |