English verb conjugation
SHOULD SCUFF

Regular verb: scuff - scuffed - scuffed

Affirmation

Simple form	V-ing form
I'd scuff you'd scuff he'd scuff we'd scuff you'd scuff they'd scuff	I'd be scuffing you'd be scuffing he'd be scuffing we'd be scuffing you'd be scuffing they'd be scuffing
Perfect	V-ing perfect
I should've scuffed you should've scuffed he should've scuffed we should've scuffed you should've scuffed they should've scuffed	I should've been scuffing you should've been scuffing he should've been scuffing we should've been scuffing you should've been scuffing they should've been scuffing

Negation

Simple form	V-ing form
I shouldn't scuff you shouldn't scuff he shouldn't scuff we shouldn't scuff you shouldn't scuff they shouldn't scuff	I shouldn't be scuffing you shouldn't be scuffing he shouldn't be scuffing we shouldn't be scuffing you shouldn't be scuffing they shouldn't be scuffing
Perfect	V-ing perfect
I shouldn't have scuffed you shouldn't have scuffed he shouldn't have scuffed we shouldn't have scuffed you shouldn't have scuffed they shouldn't have scuffed	I shouldn't have been scuffing you shouldn't have been scuffing he shouldn't have been scuffing we shouldn't have been scuffing you shouldn't have been scuffing they shouldn't have been scuffing

Interrogative form

Simple form	V-ing form
should I scuff? should you scuff? should he scuff? should we scuff? should you scuff? should they scuff?	should I be scuffing? should you be scuffing? should he be scuffing? should we be scuffing? should you be scuffing? should they be scuffing?
Perfect	V-ing perfect
should I have scuffed? should you have scuffed? should he have scuffed? should we have scuffed? should you have scuffed? should they have scuffed?	should I have been scuffing? should you have been scuffing? should he have been scuffing? should we have been scuffing? should you have been scuffing? should they have been scuffing?

Interro-negative form

Simple form	V-ing form
shouldn't I scuff? shouldn't you scuff? shouldn't he scuff? shouldn't we scuff? shouldn't you scuff? shouldn't they scuff?	shouldn't I be scuffing? shouldn't you be scuffing? shouldn't he be scuffing? shouldn't we be scuffing? shouldn't you be scuffing? shouldn't they be scuffing?
Perfect	V-ing perfect
shouldn't I have scuffed? shouldn't you have scuffed? shouldn't he have scuffed? shouldn't we have scuffed? shouldn't you have scuffed? shouldn't they have scuffed?	shouldn't I have been scuffing? shouldn't you have been scuffing? shouldn't he have been scuffing? shouldn't we have been scuffing? shouldn't you have been scuffing? shouldn't they have been scuffing?