I should walk you should walk he should walk we should walk you should walk they should walk
V-ing form
I should be walking you should be walking he should be walking we should be walking you should be walking they should be walking
Perfect
I should have walked you should have walked he should have walked we should have walked you should have walked they should have walked
V-ing perfect
I should have been walking you should have been walking he should have been walking we should have been walking you should have been walking they should have been walking
Negation
Simple form
I should not walk you should not walk he should not walk we should not walk you should not walk they should not walk
V-ing form
I should not be walking you should not be walking he should not be walking we should not be walking you should not be walking they should not be walking
Perfect
I should not have walked you should not have walked he should not have walked we should not have walked you should not have walked they should not have walked
V-ing perfect
I should not have been walking you should not have been walking he should not have been walking we should not have been walking you should not have been walking they should not 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
should I not walk? should you not walk? should he not walk? should we not walk? should you not walk? should they not walk?
V-ing form
should I not be walking? should you not be walking? should he not be walking? should we not be walking? should you not be walking? should they not be walking?
Perfect
should I not have walked? should you not have walked? should he not have walked? should we not have walked? should you not have walked? should they not have walked?
V-ing perfect
should I not have been walking? should you not have been walking? should he not have been walking? should we not have been walking? should you not have been walking? should they not have been walking?