English verb conjugation
SHOULD TAX

Regular verb: tax - taxed - taxed

Affirmation

Simple form	V-ing form
I'd tax you'd tax he'd tax we'd tax you'd tax they'd tax	I'd be taxing you'd be taxing he'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 he 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 he 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 he 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 he 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 he 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 he 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 he tax? should we tax? should you tax? should they tax?	should I be taxing? should you be taxing? should he 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 he 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 he 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 he 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 he 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 he 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 he have been taxing? shouldn't we have been taxing? shouldn't you have been taxing? shouldn't they have been taxing?