I'd be stamping you'd be stamping he'd be stamping we'd be stamping you'd be stamping they'd be stamping
Perfect
I should've stamped you should've stamped he should've stamped we should've stamped you should've stamped they should've stamped
V-ing perfect
I should've been stamping you should've been stamping he should've been stamping we should've been stamping you should've been stamping they should've been stamping
Negation
Simple form
I shouldn't stamp you shouldn't stamp he shouldn't stamp we shouldn't stamp you shouldn't stamp they shouldn't stamp
V-ing form
I shouldn't be stamping you shouldn't be stamping he shouldn't be stamping we shouldn't be stamping you shouldn't be stamping they shouldn't be stamping
Perfect
I shouldn't have stamped you shouldn't have stamped he shouldn't have stamped we shouldn't have stamped you shouldn't have stamped they shouldn't have stamped
V-ing perfect
I shouldn't have been stamping you shouldn't have been stamping he shouldn't have been stamping we shouldn't have been stamping you shouldn't have been stamping they shouldn't have been stamping
Interrogative form
Simple form
should I stamp? should you stamp? should he stamp? should we stamp? should you stamp? should they stamp?
V-ing form
should I be stamping? should you be stamping? should he be stamping? should we be stamping? should you be stamping? should they be stamping?
Perfect
should I have stamped? should you have stamped? should he have stamped? should we have stamped? should you have stamped? should they have stamped?
V-ing perfect
should I have been stamping? should you have been stamping? should he have been stamping? should we have been stamping? should you have been stamping? should they have been stamping?
Interro-negative form
Simple form
shouldn't I stamp? shouldn't you stamp? shouldn't he stamp? shouldn't we stamp? shouldn't you stamp? shouldn't they stamp?
V-ing form
shouldn't I be stamping? shouldn't you be stamping? shouldn't he be stamping? shouldn't we be stamping? shouldn't you be stamping? shouldn't they be stamping?
Perfect
shouldn't I have stamped? shouldn't you have stamped? shouldn't he have stamped? shouldn't we have stamped? shouldn't you have stamped? shouldn't they have stamped?
V-ing perfect
shouldn't I have been stamping? shouldn't you have been stamping? shouldn't he have been stamping? shouldn't we have been stamping? shouldn't you have been stamping? shouldn't they have been stamping?