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