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