I should centrifuge you should centrifuge she should centrifuge we should centrifuge you should centrifuge they should centrifuge
V-ing form
I should be centrifuging you should be centrifuging she should be centrifuging we should be centrifuging you should be centrifuging they should be centrifuging
Perfect
I should have centrifuged you should have centrifuged she should have centrifuged we should have centrifuged you should have centrifuged they should have centrifuged
V-ing perfect
I should have been centrifuging you should have been centrifuging she should have been centrifuging we should have been centrifuging you should have been centrifuging they should have been centrifuging
Negation
Simple form
I should not centrifuge you should not centrifuge she should not centrifuge we should not centrifuge you should not centrifuge they should not centrifuge
V-ing form
I should not be centrifuging you should not be centrifuging she should not be centrifuging we should not be centrifuging you should not be centrifuging they should not be centrifuging
Perfect
I should not have centrifuged you should not have centrifuged she should not have centrifuged we should not have centrifuged you should not have centrifuged they should not have centrifuged
V-ing perfect
I should not have been centrifuging you should not have been centrifuging she should not have been centrifuging we should not have been centrifuging you should not have been centrifuging they should not have been centrifuging
Interrogative form
Simple form
should I centrifuge? should you centrifuge? should she centrifuge? should we centrifuge? should you centrifuge? should they centrifuge?
V-ing form
should I be centrifuging? should you be centrifuging? should she be centrifuging? should we be centrifuging? should you be centrifuging? should they be centrifuging?
Perfect
should I have centrifuged? should you have centrifuged? should she have centrifuged? should we have centrifuged? should you have centrifuged? should they have centrifuged?
V-ing perfect
should I have been centrifuging? should you have been centrifuging? should she have been centrifuging? should we have been centrifuging? should you have been centrifuging? should they have been centrifuging?
Interro-negative form
Simple form
should I not centrifuge? should you not centrifuge? should she not centrifuge? should we not centrifuge? should you not centrifuge? should they not centrifuge?
V-ing form
should I not be centrifuging? should you not be centrifuging? should she not be centrifuging? should we not be centrifuging? should you not be centrifuging? should they not be centrifuging?
Perfect
should I not have centrifuged? should you not have centrifuged? should she not have centrifuged? should we not have centrifuged? should you not have centrifuged? should they not have centrifuged?
V-ing perfect
should I not have been centrifuging? should you not have been centrifuging? should she not have been centrifuging? should we not have been centrifuging? should you not have been centrifuging? should they not have been centrifuging?