English verb conjugation
SHOULD PUFF

Regular verb: puff - puffed - puffed

Affirmation

Simple form	V-ing form
I should puff you should puff she should puff we should puff you should puff they should puff	I should be puffing you should be puffing she should be puffing we should be puffing you should be puffing they should be puffing
Perfect	V-ing perfect
I should have puffed you should have puffed she should have puffed we should have puffed you should have puffed they should have puffed	I should have been puffing you should have been puffing she should have been puffing we should have been puffing you should have been puffing they should have been puffing

Negation

Simple form	V-ing form
I should not puff you should not puff she should not puff we should not puff you should not puff they should not puff	I should not be puffing you should not be puffing she should not be puffing we should not be puffing you should not be puffing they should not be puffing
Perfect	V-ing perfect
I should not have puffed you should not have puffed she should not have puffed we should not have puffed you should not have puffed they should not have puffed	I should not have been puffing you should not have been puffing she should not have been puffing we should not have been puffing you should not have been puffing they should not have been puffing

Interrogative form

Simple form	V-ing form
should I puff? should you puff? should she puff? should we puff? should you puff? should they puff?	should I be puffing? should you be puffing? should she be puffing? should we be puffing? should you be puffing? should they be puffing?
Perfect	V-ing perfect
should I have puffed? should you have puffed? should she have puffed? should we have puffed? should you have puffed? should they have puffed?	should I have been puffing? should you have been puffing? should she have been puffing? should we have been puffing? should you have been puffing? should they have been puffing?

Interro-negative form

Simple form	V-ing form
should I not puff? should you not puff? should she not puff? should we not puff? should you not puff? should they not puff?	should I not be puffing? should you not be puffing? should she not be puffing? should we not be puffing? should you not be puffing? should they not be puffing?
Perfect	V-ing perfect
should I not have puffed? should you not have puffed? should she not have puffed? should we not have puffed? should you not have puffed? should they not have puffed?	should I not have been puffing? should you not have been puffing? should she not have been puffing? should we not have been puffing? should you not have been puffing? should they not have been puffing?