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