English verb conjugation
SHOULD TAX

Regular verb: tax - taxed - taxed

Affirmation

Simple form	V-ing form
I'd tax you'd tax she'd tax we'd tax you'd tax they'd tax	I'd be taxing you'd be taxing she'd be taxing we'd be taxing you'd be taxing they'd be taxing
Perfect	V-ing perfect
I should've taxed you should've taxed she should've taxed we should've taxed you should've taxed they should've taxed	I should've been taxing you should've been taxing she should've been taxing we should've been taxing you should've been taxing they should've been taxing

Negation

Simple form	V-ing form
I shouldn't tax you shouldn't tax she shouldn't tax we shouldn't tax you shouldn't tax they shouldn't tax	I shouldn't be taxing you shouldn't be taxing she shouldn't be taxing we shouldn't be taxing you shouldn't be taxing they shouldn't be taxing
Perfect	V-ing perfect
I shouldn't have taxed you shouldn't have taxed she shouldn't have taxed we shouldn't have taxed you shouldn't have taxed they shouldn't have taxed	I shouldn't have been taxing you shouldn't have been taxing she shouldn't have been taxing we shouldn't have been taxing you shouldn't have been taxing they shouldn't have been taxing

Interrogative form

Simple form	V-ing form
should I tax? should you tax? should she tax? should we tax? should you tax? should they tax?	should I be taxing? should you be taxing? should she be taxing? should we be taxing? should you be taxing? should they be taxing?
Perfect	V-ing perfect
should I have taxed? should you have taxed? should she have taxed? should we have taxed? should you have taxed? should they have taxed?	should I have been taxing? should you have been taxing? should she have been taxing? should we have been taxing? should you have been taxing? should they have been taxing?

Interro-negative form

Simple form	V-ing form
shouldn't I tax? shouldn't you tax? shouldn't she tax? shouldn't we tax? shouldn't you tax? shouldn't they tax?	shouldn't I be taxing? shouldn't you be taxing? shouldn't she be taxing? shouldn't we be taxing? shouldn't you be taxing? shouldn't they be taxing?
Perfect	V-ing perfect
shouldn't I have taxed? shouldn't you have taxed? shouldn't she have taxed? shouldn't we have taxed? shouldn't you have taxed? shouldn't they have taxed?	shouldn't I have been taxing? shouldn't you have been taxing? shouldn't she have been taxing? shouldn't we have been taxing? shouldn't you have been taxing? shouldn't they have been taxing?