I'd be downgrading you'd be downgrading she'd be downgrading we'd be downgrading you'd be downgrading they'd be downgrading
Perfect
I should've downgraded you should've downgraded she should've downgraded we should've downgraded you should've downgraded they should've downgraded
V-ing perfect
I should've been downgrading you should've been downgrading she should've been downgrading we should've been downgrading you should've been downgrading they should've been downgrading
Negation
Simple form
I shouldn't downgrade you shouldn't downgrade she shouldn't downgrade we shouldn't downgrade you shouldn't downgrade they shouldn't downgrade
V-ing form
I shouldn't be downgrading you shouldn't be downgrading she shouldn't be downgrading we shouldn't be downgrading you shouldn't be downgrading they shouldn't be downgrading
Perfect
I shouldn't have downgraded you shouldn't have downgraded she shouldn't have downgraded we shouldn't have downgraded you shouldn't have downgraded they shouldn't have downgraded
V-ing perfect
I shouldn't have been downgrading you shouldn't have been downgrading she shouldn't have been downgrading we shouldn't have been downgrading you shouldn't have been downgrading they shouldn't have been downgrading
Interrogative form
Simple form
should I downgrade? should you downgrade? should she downgrade? should we downgrade? should you downgrade? should they downgrade?
V-ing form
should I be downgrading? should you be downgrading? should she be downgrading? should we be downgrading? should you be downgrading? should they be downgrading?
Perfect
should I have downgraded? should you have downgraded? should she have downgraded? should we have downgraded? should you have downgraded? should they have downgraded?
V-ing perfect
should I have been downgrading? should you have been downgrading? should she have been downgrading? should we have been downgrading? should you have been downgrading? should they have been downgrading?
Interro-negative form
Simple form
shouldn't I downgrade? shouldn't you downgrade? shouldn't she downgrade? shouldn't we downgrade? shouldn't you downgrade? shouldn't they downgrade?
V-ing form
shouldn't I be downgrading? shouldn't you be downgrading? shouldn't she be downgrading? shouldn't we be downgrading? shouldn't you be downgrading? shouldn't they be downgrading?
Perfect
shouldn't I have downgraded? shouldn't you have downgraded? shouldn't she have downgraded? shouldn't we have downgraded? shouldn't you have downgraded? shouldn't they have downgraded?
V-ing perfect
shouldn't I have been downgrading? shouldn't you have been downgrading? shouldn't she have been downgrading? shouldn't we have been downgrading? shouldn't you have been downgrading? shouldn't they have been downgrading?