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