English verb conjugation
SHOULD SCUFF

Regular verb: scuff - scuffed - scuffed

Affirmation

Simple form	V-ing form
I'd scuff you'd scuff she'd scuff we'd scuff you'd scuff they'd scuff	I'd be scuffing you'd be scuffing she'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 she 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 she 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 she 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 she 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 she 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 she 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 she scuff? should we scuff? should you scuff? should they scuff?	should I be scuffing? should you be scuffing? should she 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 she 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 she 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 she 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 she 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 she 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 she have been scuffing? shouldn't we have been scuffing? shouldn't you have been scuffing? shouldn't they have been scuffing?