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