English verb conjugation
SHOULD ROLF

Regular verb: rolf - rolfed - rolfed

Affirmation

Simple form	V-ing form
I should rolf you should rolf he should rolf we should rolf you should rolf they should rolf	I should be rolfing you should be rolfing he should be rolfing we should be rolfing you should be rolfing they should be rolfing
Perfect	V-ing perfect
I should have rolfed you should have rolfed he should have rolfed we should have rolfed you should have rolfed they should have rolfed	I should have been rolfing you should have been rolfing he should have been rolfing we should have been rolfing you should have been rolfing they should have been rolfing

Negation

Simple form	V-ing form
I should not rolf you should not rolf he should not rolf we should not rolf you should not rolf they should not rolf	I should not be rolfing you should not be rolfing he should not be rolfing we should not be rolfing you should not be rolfing they should not be rolfing
Perfect	V-ing perfect
I should not have rolfed you should not have rolfed he should not have rolfed we should not have rolfed you should not have rolfed they should not have rolfed	I should not have been rolfing you should not have been rolfing he should not have been rolfing we should not have been rolfing you should not have been rolfing they should not have been rolfing

Interrogative form

Simple form	V-ing form
should I rolf? should you rolf? should he rolf? should we rolf? should you rolf? should they rolf?	should I be rolfing? should you be rolfing? should he be rolfing? should we be rolfing? should you be rolfing? should they be rolfing?
Perfect	V-ing perfect
should I have rolfed? should you have rolfed? should he have rolfed? should we have rolfed? should you have rolfed? should they have rolfed?	should I have been rolfing? should you have been rolfing? should he have been rolfing? should we have been rolfing? should you have been rolfing? should they have been rolfing?

Interro-negative form

Simple form	V-ing form
should I not rolf? should you not rolf? should he not rolf? should we not rolf? should you not rolf? should they not rolf?	should I not be rolfing? should you not be rolfing? should he not be rolfing? should we not be rolfing? should you not be rolfing? should they not be rolfing?
Perfect	V-ing perfect
should I not have rolfed? should you not have rolfed? should he not have rolfed? should we not have rolfed? should you not have rolfed? should they not have rolfed?	should I not have been rolfing? should you not have been rolfing? should he not have been rolfing? should we not have been rolfing? should you not have been rolfing? should they not have been rolfing?