English verb conjugation
SHOULD ROLF

Regular verb: rolf - rolfed - rolfed

Affirmation

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

Negation

Simple form	V-ing form
I shouldn't rolf you shouldn't rolf he shouldn't rolf we shouldn't rolf you shouldn't rolf they shouldn't rolf	I shouldn't be rolfing you shouldn't be rolfing he shouldn't be rolfing we shouldn't be rolfing you shouldn't be rolfing they shouldn't be rolfing
Perfect	V-ing perfect
I shouldn't have rolfed you shouldn't have rolfed he shouldn't have rolfed we shouldn't have rolfed you shouldn't have rolfed they shouldn't have rolfed	I shouldn't have been rolfing you shouldn't have been rolfing he shouldn't have been rolfing we shouldn't have been rolfing you shouldn't have been rolfing they shouldn't 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
shouldn't I rolf? shouldn't you rolf? shouldn't he rolf? shouldn't we rolf? shouldn't you rolf? shouldn't they rolf?	shouldn't I be rolfing? shouldn't you be rolfing? shouldn't he be rolfing? shouldn't we be rolfing? shouldn't you be rolfing? shouldn't they be rolfing?
Perfect	V-ing perfect
shouldn't I have rolfed? shouldn't you have rolfed? shouldn't he have rolfed? shouldn't we have rolfed? shouldn't you have rolfed? shouldn't they have rolfed?	shouldn't I have been rolfing? shouldn't you have been rolfing? shouldn't he have been rolfing? shouldn't we have been rolfing? shouldn't you have been rolfing? shouldn't they have been rolfing?