English verb conjugation
SHOULD RUFF

Regular verb: ruff - ruffed - ruffed

Affirmation

Simple form	V-ing form
I'd ruff you'd ruff she'd ruff we'd ruff you'd ruff they'd ruff	I'd be ruffing you'd be ruffing she'd be ruffing we'd be ruffing you'd be ruffing they'd be ruffing
Perfect	V-ing perfect
I should've ruffed you should've ruffed she should've ruffed we should've ruffed you should've ruffed they should've ruffed	I should've been ruffing you should've been ruffing she should've been ruffing we should've been ruffing you should've been ruffing they should've been ruffing

Negation

Simple form	V-ing form
I shouldn't ruff you shouldn't ruff she shouldn't ruff we shouldn't ruff you shouldn't ruff they shouldn't ruff	I shouldn't be ruffing you shouldn't be ruffing she shouldn't be ruffing we shouldn't be ruffing you shouldn't be ruffing they shouldn't be ruffing
Perfect	V-ing perfect
I shouldn't have ruffed you shouldn't have ruffed she shouldn't have ruffed we shouldn't have ruffed you shouldn't have ruffed they shouldn't have ruffed	I shouldn't have been ruffing you shouldn't have been ruffing she shouldn't have been ruffing we shouldn't have been ruffing you shouldn't have been ruffing they shouldn't have been ruffing

Interrogative form

Simple form	V-ing form
should I ruff? should you ruff? should she ruff? should we ruff? should you ruff? should they ruff?	should I be ruffing? should you be ruffing? should she be ruffing? should we be ruffing? should you be ruffing? should they be ruffing?
Perfect	V-ing perfect
should I have ruffed? should you have ruffed? should she have ruffed? should we have ruffed? should you have ruffed? should they have ruffed?	should I have been ruffing? should you have been ruffing? should she have been ruffing? should we have been ruffing? should you have been ruffing? should they have been ruffing?

Interro-negative form

Simple form	V-ing form
shouldn't I ruff? shouldn't you ruff? shouldn't she ruff? shouldn't we ruff? shouldn't you ruff? shouldn't they ruff?	shouldn't I be ruffing? shouldn't you be ruffing? shouldn't she be ruffing? shouldn't we be ruffing? shouldn't you be ruffing? shouldn't they be ruffing?
Perfect	V-ing perfect
shouldn't I have ruffed? shouldn't you have ruffed? shouldn't she have ruffed? shouldn't we have ruffed? shouldn't you have ruffed? shouldn't they have ruffed?	shouldn't I have been ruffing? shouldn't you have been ruffing? shouldn't she have been ruffing? shouldn't we have been ruffing? shouldn't you have been ruffing? shouldn't they have been ruffing?