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