I should dredge you should dredge he should dredge we should dredge you should dredge they should dredge
V-ing form
I should be dredging you should be dredging he should be dredging we should be dredging you should be dredging they should be dredging
Perfect
I should have dredged you should have dredged he should have dredged we should have dredged you should have dredged they should have dredged
V-ing perfect
I should have been dredging you should have been dredging he should have been dredging we should have been dredging you should have been dredging they should have been dredging
Negation
Simple form
I should not dredge you should not dredge he should not dredge we should not dredge you should not dredge they should not dredge
V-ing form
I should not be dredging you should not be dredging he should not be dredging we should not be dredging you should not be dredging they should not be dredging
Perfect
I should not have dredged you should not have dredged he should not have dredged we should not have dredged you should not have dredged they should not have dredged
V-ing perfect
I should not have been dredging you should not have been dredging he should not have been dredging we should not have been dredging you should not have been dredging they should not have been dredging
Interrogative form
Simple form
should I dredge? should you dredge? should he dredge? should we dredge? should you dredge? should they dredge?
V-ing form
should I be dredging? should you be dredging? should he be dredging? should we be dredging? should you be dredging? should they be dredging?
Perfect
should I have dredged? should you have dredged? should he have dredged? should we have dredged? should you have dredged? should they have dredged?
V-ing perfect
should I have been dredging? should you have been dredging? should he have been dredging? should we have been dredging? should you have been dredging? should they have been dredging?
Interro-negative form
Simple form
should I not dredge? should you not dredge? should he not dredge? should we not dredge? should you not dredge? should they not dredge?
V-ing form
should I not be dredging? should you not be dredging? should he not be dredging? should we not be dredging? should you not be dredging? should they not be dredging?
Perfect
should I not have dredged? should you not have dredged? should he not have dredged? should we not have dredged? should you not have dredged? should they not have dredged?
V-ing perfect
should I not have been dredging? should you not have been dredging? should he not have been dredging? should we not have been dredging? should you not have been dredging? should they not have been dredging?