English verb conjugation
SHOULD RUFF

Regular verb: ruff - ruffed - ruffed

Affirmation

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

Negation

Simple form	V-ing form
I should not ruff you should not ruff she should not ruff we should not ruff you should not ruff they should not ruff	I should not be ruffing you should not be ruffing she should not be ruffing we should not be ruffing you should not be ruffing they should not be ruffing
Perfect	V-ing perfect
I should not have ruffed you should not have ruffed she should not have ruffed we should not have ruffed you should not have ruffed they should not have ruffed	I should not have been ruffing you should not have been ruffing she should not have been ruffing we should not have been ruffing you should not have been ruffing they should not 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
should I not ruff? should you not ruff? should she not ruff? should we not ruff? should you not ruff? should they not ruff?	should I not be ruffing? should you not be ruffing? should she not be ruffing? should we not be ruffing? should you not be ruffing? should they not be ruffing?
Perfect	V-ing perfect
should I not have ruffed? should you not have ruffed? should she not have ruffed? should we not have ruffed? should you not have ruffed? should they not have ruffed?	should I not have been ruffing? should you not have been ruffing? should she not have been ruffing? should we not have been ruffing? should you not have been ruffing? should they not have been ruffing?