English verb conjugation
SHOULD PREEN

Regular verb: preen - preened - preened

Affirmation

Simple form	V-ing form
I'd preen you'd preen she'd preen we'd preen you'd preen they'd preen	I'd be preening you'd be preening she'd be preening we'd be preening you'd be preening they'd be preening
Perfect	V-ing perfect
I should've preened you should've preened she should've preened we should've preened you should've preened they should've preened	I should've been preening you should've been preening she should've been preening we should've been preening you should've been preening they should've been preening

Negation

Simple form	V-ing form
I shouldn't preen you shouldn't preen she shouldn't preen we shouldn't preen you shouldn't preen they shouldn't preen	I shouldn't be preening you shouldn't be preening she shouldn't be preening we shouldn't be preening you shouldn't be preening they shouldn't be preening
Perfect	V-ing perfect
I shouldn't have preened you shouldn't have preened she shouldn't have preened we shouldn't have preened you shouldn't have preened they shouldn't have preened	I shouldn't have been preening you shouldn't have been preening she shouldn't have been preening we shouldn't have been preening you shouldn't have been preening they shouldn't have been preening

Interrogative form

Simple form	V-ing form
should I preen? should you preen? should she preen? should we preen? should you preen? should they preen?	should I be preening? should you be preening? should she be preening? should we be preening? should you be preening? should they be preening?
Perfect	V-ing perfect
should I have preened? should you have preened? should she have preened? should we have preened? should you have preened? should they have preened?	should I have been preening? should you have been preening? should she have been preening? should we have been preening? should you have been preening? should they have been preening?

Interro-negative form

Simple form	V-ing form
shouldn't I preen? shouldn't you preen? shouldn't she preen? shouldn't we preen? shouldn't you preen? shouldn't they preen?	shouldn't I be preening? shouldn't you be preening? shouldn't she be preening? shouldn't we be preening? shouldn't you be preening? shouldn't they be preening?
Perfect	V-ing perfect
shouldn't I have preened? shouldn't you have preened? shouldn't she have preened? shouldn't we have preened? shouldn't you have preened? shouldn't they have preened?	shouldn't I have been preening? shouldn't you have been preening? shouldn't she have been preening? shouldn't we have been preening? shouldn't you have been preening? shouldn't they have been preening?