I should bs you should bs he should bs we should bs you should bs they should bs
V-ing form
I should be bsing you should be bsing he should be bsing we should be bsing you should be bsing they should be bsing
Perfect
I should have bsed you should have bsed he should have bsed we should have bsed you should have bsed they should have bsed
V-ing perfect
I should have been bsing you should have been bsing he should have been bsing we should have been bsing you should have been bsing they should have been bsing
Negation
Simple form
I should not bs you should not bs he should not bs we should not bs you should not bs they should not bs
V-ing form
I should not be bsing you should not be bsing he should not be bsing we should not be bsing you should not be bsing they should not be bsing
Perfect
I should not have bsed you should not have bsed he should not have bsed we should not have bsed you should not have bsed they should not have bsed
V-ing perfect
I should not have been bsing you should not have been bsing he should not have been bsing we should not have been bsing you should not have been bsing they should not have been bsing
Interrogative form
Simple form
should I bs? should you bs? should he bs? should we bs? should you bs? should they bs?
V-ing form
should I be bsing? should you be bsing? should he be bsing? should we be bsing? should you be bsing? should they be bsing?
Perfect
should I have bsed? should you have bsed? should he have bsed? should we have bsed? should you have bsed? should they have bsed?
V-ing perfect
should I have been bsing? should you have been bsing? should he have been bsing? should we have been bsing? should you have been bsing? should they have been bsing?
Interro-negative form
Simple form
should I not bs? should you not bs? should he not bs? should we not bs? should you not bs? should they not bs?
V-ing form
should I not be bsing? should you not be bsing? should he not be bsing? should we not be bsing? should you not be bsing? should they not be bsing?
Perfect
should I not have bsed? should you not have bsed? should he not have bsed? should we not have bsed? should you not have bsed? should they not have bsed?
V-ing perfect
should I not have been bsing? should you not have been bsing? should he not have been bsing? should we not have been bsing? should you not have been bsing? should they not have been bsing?