English verb conjugation
SHOULD STAPLE

Regular verb: staple - stapled - stapled

Affirmation

Simple form	V-ing form
I'd staple you'd staple he'd staple we'd staple you'd staple they'd staple	I'd be stapling you'd be stapling he'd be stapling we'd be stapling you'd be stapling they'd be stapling
Perfect	V-ing perfect
I should've stapled you should've stapled he should've stapled we should've stapled you should've stapled they should've stapled	I should've been stapling you should've been stapling he should've been stapling we should've been stapling you should've been stapling they should've been stapling

Negation

Simple form	V-ing form
I shouldn't staple you shouldn't staple he shouldn't staple we shouldn't staple you shouldn't staple they shouldn't staple	I shouldn't be stapling you shouldn't be stapling he shouldn't be stapling we shouldn't be stapling you shouldn't be stapling they shouldn't be stapling
Perfect	V-ing perfect
I shouldn't have stapled you shouldn't have stapled he shouldn't have stapled we shouldn't have stapled you shouldn't have stapled they shouldn't have stapled	I shouldn't have been stapling you shouldn't have been stapling he shouldn't have been stapling we shouldn't have been stapling you shouldn't have been stapling they shouldn't have been stapling

Interrogative form

Simple form	V-ing form
should I staple? should you staple? should he staple? should we staple? should you staple? should they staple?	should I be stapling? should you be stapling? should he be stapling? should we be stapling? should you be stapling? should they be stapling?
Perfect	V-ing perfect
should I have stapled? should you have stapled? should he have stapled? should we have stapled? should you have stapled? should they have stapled?	should I have been stapling? should you have been stapling? should he have been stapling? should we have been stapling? should you have been stapling? should they have been stapling?

Interro-negative form

Simple form	V-ing form
shouldn't I staple? shouldn't you staple? shouldn't he staple? shouldn't we staple? shouldn't you staple? shouldn't they staple?	shouldn't I be stapling? shouldn't you be stapling? shouldn't he be stapling? shouldn't we be stapling? shouldn't you be stapling? shouldn't they be stapling?
Perfect	V-ing perfect
shouldn't I have stapled? shouldn't you have stapled? shouldn't he have stapled? shouldn't we have stapled? shouldn't you have stapled? shouldn't they have stapled?	shouldn't I have been stapling? shouldn't you have been stapling? shouldn't he have been stapling? shouldn't we have been stapling? shouldn't you have been stapling? shouldn't they have been stapling?