I'd be pricking you'd be pricking he'd be pricking we'd be pricking you'd be pricking they'd be pricking
Perfect
I should've pricked you should've pricked he should've pricked we should've pricked you should've pricked they should've pricked
V-ing perfect
I should've been pricking you should've been pricking he should've been pricking we should've been pricking you should've been pricking they should've been pricking
Negation
Simple form
I shouldn't prick you shouldn't prick he shouldn't prick we shouldn't prick you shouldn't prick they shouldn't prick
V-ing form
I shouldn't be pricking you shouldn't be pricking he shouldn't be pricking we shouldn't be pricking you shouldn't be pricking they shouldn't be pricking
Perfect
I shouldn't have pricked you shouldn't have pricked he shouldn't have pricked we shouldn't have pricked you shouldn't have pricked they shouldn't have pricked
V-ing perfect
I shouldn't have been pricking you shouldn't have been pricking he shouldn't have been pricking we shouldn't have been pricking you shouldn't have been pricking they shouldn't 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
shouldn't I prick? shouldn't you prick? shouldn't he prick? shouldn't we prick? shouldn't you prick? shouldn't they prick?
V-ing form
shouldn't I be pricking? shouldn't you be pricking? shouldn't he be pricking? shouldn't we be pricking? shouldn't you be pricking? shouldn't they be pricking?
Perfect
shouldn't I have pricked? shouldn't you have pricked? shouldn't he have pricked? shouldn't we have pricked? shouldn't you have pricked? shouldn't they have pricked?
V-ing perfect
shouldn't I have been pricking? shouldn't you have been pricking? shouldn't he have been pricking? shouldn't we have been pricking? shouldn't you have been pricking? shouldn't they have been pricking?