I should prick you should prick he should prick we should prick you should prick they should prick
V-ing form
I should be pricking you should be pricking he should be pricking we should be pricking you should be pricking they should be pricking
Perfect
I should have pricked you should have pricked he should have pricked we should have pricked you should have pricked they should have pricked
V-ing perfect
I should have been pricking you should have been pricking he should have been pricking we should have been pricking you should have been pricking they should have been pricking
Negation
Simple form
I should not prick you should not prick he should not prick we should not prick you should not prick they should not prick
V-ing form
I should not be pricking you should not be pricking he should not be pricking we should not be pricking you should not be pricking they should not be pricking
Perfect
I should not have pricked you should not have pricked he should not have pricked we should not have pricked you should not have pricked they should not have pricked
V-ing perfect
I should not have been pricking you should not have been pricking he should not have been pricking we should not have been pricking you should not have been pricking they should not have been pricking
Interrogative form
Simple form
should I prick? should you prick? should he prick? should we prick? should you prick? should they prick?
V-ing form
should I be pricking? should you be pricking? should he be pricking? should we be pricking? should you be pricking? should they be pricking?
Perfect
should I have pricked? should you have pricked? should he have pricked? should we have pricked? should you have pricked? should they have pricked?
V-ing perfect
should I have been pricking? should you have been pricking? should he have been pricking? should we have been pricking? should you have been pricking? should they have been pricking?
Interro-negative form
Simple form
should I not prick? should you not prick? should he not prick? should we not prick? should you not prick? should they not prick?
V-ing form
should I not be pricking? should you not be pricking? should he not be pricking? should we not be pricking? should you not be pricking? should they not be pricking?
Perfect
should I not have pricked? should you not have pricked? should he not have pricked? should we not have pricked? should you not have pricked? should they not have pricked?
V-ing perfect
should I not have been pricking? should you not have been pricking? should he not have been pricking? should we not have been pricking? should you not have been pricking? should they not have been pricking?