English verb conjugation
SHOULD USE

Regular verb: use - used - used

Affirmation

Simple form	V-ing form
I'd use you'd use she'd use we'd use you'd use they'd use	I'd be using you'd be using she'd be using we'd be using you'd be using they'd be using
Perfect	V-ing perfect
I should've used you should've used she should've used we should've used you should've used they should've used	I should've been using you should've been using she should've been using we should've been using you should've been using they should've been using

Negation

Simple form	V-ing form
I shouldn't use you shouldn't use she shouldn't use we shouldn't use you shouldn't use they shouldn't use	I shouldn't be using you shouldn't be using she shouldn't be using we shouldn't be using you shouldn't be using they shouldn't be using
Perfect	V-ing perfect
I shouldn't have used you shouldn't have used she shouldn't have used we shouldn't have used you shouldn't have used they shouldn't have used	I shouldn't have been using you shouldn't have been using she shouldn't have been using we shouldn't have been using you shouldn't have been using they shouldn't have been using

Interrogative form

Simple form	V-ing form
should I use? should you use? should she use? should we use? should you use? should they use?	should I be using? should you be using? should she be using? should we be using? should you be using? should they be using?
Perfect	V-ing perfect
should I have used? should you have used? should she have used? should we have used? should you have used? should they have used?	should I have been using? should you have been using? should she have been using? should we have been using? should you have been using? should they have been using?

Interro-negative form

Simple form	V-ing form
shouldn't I use? shouldn't you use? shouldn't she use? shouldn't we use? shouldn't you use? shouldn't they use?	shouldn't I be using? shouldn't you be using? shouldn't she be using? shouldn't we be using? shouldn't you be using? shouldn't they be using?
Perfect	V-ing perfect
shouldn't I have used? shouldn't you have used? shouldn't she have used? shouldn't we have used? shouldn't you have used? shouldn't they have used?	shouldn't I have been using? shouldn't you have been using? shouldn't she have been using? shouldn't we have been using? shouldn't you have been using? shouldn't they have been using?