English verb conjugation
SHOULD FUNCTION

Regular verb: function - functioned - functioned

Affirmation

Simple form	V-ing form
I'd function you'd function she'd function we'd function you'd function they'd function	I'd be functioning you'd be functioning she'd be functioning we'd be functioning you'd be functioning they'd be functioning
Perfect	V-ing perfect
I should've functioned you should've functioned she should've functioned we should've functioned you should've functioned they should've functioned	I should've been functioning you should've been functioning she should've been functioning we should've been functioning you should've been functioning they should've been functioning

Negation

Simple form	V-ing form
I shouldn't function you shouldn't function she shouldn't function we shouldn't function you shouldn't function they shouldn't function	I shouldn't be functioning you shouldn't be functioning she shouldn't be functioning we shouldn't be functioning you shouldn't be functioning they shouldn't be functioning
Perfect	V-ing perfect
I shouldn't have functioned you shouldn't have functioned she shouldn't have functioned we shouldn't have functioned you shouldn't have functioned they shouldn't have functioned	I shouldn't have been functioning you shouldn't have been functioning she shouldn't have been functioning we shouldn't have been functioning you shouldn't have been functioning they shouldn't have been functioning

Interrogative form

Simple form	V-ing form
should I function? should you function? should she function? should we function? should you function? should they function?	should I be functioning? should you be functioning? should she be functioning? should we be functioning? should you be functioning? should they be functioning?
Perfect	V-ing perfect
should I have functioned? should you have functioned? should she have functioned? should we have functioned? should you have functioned? should they have functioned?	should I have been functioning? should you have been functioning? should she have been functioning? should we have been functioning? should you have been functioning? should they have been functioning?

Interro-negative form

Simple form	V-ing form
shouldn't I function? shouldn't you function? shouldn't she function? shouldn't we function? shouldn't you function? shouldn't they function?	shouldn't I be functioning? shouldn't you be functioning? shouldn't she be functioning? shouldn't we be functioning? shouldn't you be functioning? shouldn't they be functioning?
Perfect	V-ing perfect
shouldn't I have functioned? shouldn't you have functioned? shouldn't she have functioned? shouldn't we have functioned? shouldn't you have functioned? shouldn't they have functioned?	shouldn't I have been functioning? shouldn't you have been functioning? shouldn't she have been functioning? shouldn't we have been functioning? shouldn't you have been functioning? shouldn't they have been functioning?