English verb conjugation
SHOULD PAY

Irregular verb: pay - paid - paid

Affirmation

Simple form	V-ing form
I'd pay you'd pay he'd pay we'd pay you'd pay they'd pay	I'd be paying you'd be paying he'd be paying we'd be paying you'd be paying they'd be paying
Perfect	V-ing perfect
I should've paid you should've paid he should've paid we should've paid you should've paid they should've paid	I should've been paying you should've been paying he should've been paying we should've been paying you should've been paying they should've been paying

Negation

Simple form	V-ing form
I shouldn't pay you shouldn't pay he shouldn't pay we shouldn't pay you shouldn't pay they shouldn't pay	I shouldn't be paying you shouldn't be paying he shouldn't be paying we shouldn't be paying you shouldn't be paying they shouldn't be paying
Perfect	V-ing perfect
I shouldn't have paid you shouldn't have paid he shouldn't have paid we shouldn't have paid you shouldn't have paid they shouldn't have paid	I shouldn't have been paying you shouldn't have been paying he shouldn't have been paying we shouldn't have been paying you shouldn't have been paying they shouldn't have been paying

Interrogative form

Simple form	V-ing form
should I pay? should you pay? should he pay? should we pay? should you pay? should they pay?	should I be paying? should you be paying? should he be paying? should we be paying? should you be paying? should they be paying?
Perfect	V-ing perfect
should I have paid? should you have paid? should he have paid? should we have paid? should you have paid? should they have paid?	should I have been paying? should you have been paying? should he have been paying? should we have been paying? should you have been paying? should they have been paying?

Interro-negative form

Simple form	V-ing form
shouldn't I pay? shouldn't you pay? shouldn't he pay? shouldn't we pay? shouldn't you pay? shouldn't they pay?	shouldn't I be paying? shouldn't you be paying? shouldn't he be paying? shouldn't we be paying? shouldn't you be paying? shouldn't they be paying?
Perfect	V-ing perfect
shouldn't I have paid? shouldn't you have paid? shouldn't he have paid? shouldn't we have paid? shouldn't you have paid? shouldn't they have paid?	shouldn't I have been paying? shouldn't you have been paying? shouldn't he have been paying? shouldn't we have been paying? shouldn't you have been paying? shouldn't they have been paying?