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