English verb conjugation
SHOULD CURVE

Regular verb: curve - curved - curved

Affirmation

Simple form	V-ing form
I'd curve you'd curve she'd curve we'd curve you'd curve they'd curve	I'd be curving you'd be curving she'd be curving we'd be curving you'd be curving they'd be curving
Perfect	V-ing perfect
I should've curved you should've curved she should've curved we should've curved you should've curved they should've curved	I should've been curving you should've been curving she should've been curving we should've been curving you should've been curving they should've been curving

Negation

Simple form	V-ing form
I shouldn't curve you shouldn't curve she shouldn't curve we shouldn't curve you shouldn't curve they shouldn't curve	I shouldn't be curving you shouldn't be curving she shouldn't be curving we shouldn't be curving you shouldn't be curving they shouldn't be curving
Perfect	V-ing perfect
I shouldn't have curved you shouldn't have curved she shouldn't have curved we shouldn't have curved you shouldn't have curved they shouldn't have curved	I shouldn't have been curving you shouldn't have been curving she shouldn't have been curving we shouldn't have been curving you shouldn't have been curving they shouldn't have been curving

Interrogative form

Simple form	V-ing form
should I curve? should you curve? should she curve? should we curve? should you curve? should they curve?	should I be curving? should you be curving? should she be curving? should we be curving? should you be curving? should they be curving?
Perfect	V-ing perfect
should I have curved? should you have curved? should she have curved? should we have curved? should you have curved? should they have curved?	should I have been curving? should you have been curving? should she have been curving? should we have been curving? should you have been curving? should they have been curving?

Interro-negative form

Simple form	V-ing form
shouldn't I curve? shouldn't you curve? shouldn't she curve? shouldn't we curve? shouldn't you curve? shouldn't they curve?	shouldn't I be curving? shouldn't you be curving? shouldn't she be curving? shouldn't we be curving? shouldn't you be curving? shouldn't they be curving?
Perfect	V-ing perfect
shouldn't I have curved? shouldn't you have curved? shouldn't she have curved? shouldn't we have curved? shouldn't you have curved? shouldn't they have curved?	shouldn't I have been curving? shouldn't you have been curving? shouldn't she have been curving? shouldn't we have been curving? shouldn't you have been curving? shouldn't they have been curving?