English verb conjugation
SHOULD FOLD

Regular verb: fold - folded - folded

Affirmation

Simple form	V-ing form
I'd fold you'd fold he'd fold we'd fold you'd fold they'd fold	I'd be folding you'd be folding he'd be folding we'd be folding you'd be folding they'd be folding
Perfect	V-ing perfect
I should've folded you should've folded he should've folded we should've folded you should've folded they should've folded	I should've been folding you should've been folding he should've been folding we should've been folding you should've been folding they should've been folding

Negation

Simple form	V-ing form
I shouldn't fold you shouldn't fold he shouldn't fold we shouldn't fold you shouldn't fold they shouldn't fold	I shouldn't be folding you shouldn't be folding he shouldn't be folding we shouldn't be folding you shouldn't be folding they shouldn't be folding
Perfect	V-ing perfect
I shouldn't have folded you shouldn't have folded he shouldn't have folded we shouldn't have folded you shouldn't have folded they shouldn't have folded	I shouldn't have been folding you shouldn't have been folding he shouldn't have been folding we shouldn't have been folding you shouldn't have been folding they shouldn't have been folding

Interrogative form

Simple form	V-ing form
should I fold? should you fold? should he fold? should we fold? should you fold? should they fold?	should I be folding? should you be folding? should he be folding? should we be folding? should you be folding? should they be folding?
Perfect	V-ing perfect
should I have folded? should you have folded? should he have folded? should we have folded? should you have folded? should they have folded?	should I have been folding? should you have been folding? should he have been folding? should we have been folding? should you have been folding? should they have been folding?

Interro-negative form

Simple form	V-ing form
shouldn't I fold? shouldn't you fold? shouldn't he fold? shouldn't we fold? shouldn't you fold? shouldn't they fold?	shouldn't I be folding? shouldn't you be folding? shouldn't he be folding? shouldn't we be folding? shouldn't you be folding? shouldn't they be folding?
Perfect	V-ing perfect
shouldn't I have folded? shouldn't you have folded? shouldn't he have folded? shouldn't we have folded? shouldn't you have folded? shouldn't they have folded?	shouldn't I have been folding? shouldn't you have been folding? shouldn't he have been folding? shouldn't we have been folding? shouldn't you have been folding? shouldn't they have been folding?