English verb conjugation
SHOULD INTERFOLD

Regular verb: interfold - interfolded - interfolded

Affirmation

Simple form	V-ing form
I'd interfold you'd interfold she'd interfold we'd interfold you'd interfold they'd interfold	I'd be interfolding you'd be interfolding she'd be interfolding we'd be interfolding you'd be interfolding they'd be interfolding
Perfect	V-ing perfect
I should've interfolded you should've interfolded she should've interfolded we should've interfolded you should've interfolded they should've interfolded	I should've been interfolding you should've been interfolding she should've been interfolding we should've been interfolding you should've been interfolding they should've been interfolding

Negation

Simple form	V-ing form
I shouldn't interfold you shouldn't interfold she shouldn't interfold we shouldn't interfold you shouldn't interfold they shouldn't interfold	I shouldn't be interfolding you shouldn't be interfolding she shouldn't be interfolding we shouldn't be interfolding you shouldn't be interfolding they shouldn't be interfolding
Perfect	V-ing perfect
I shouldn't have interfolded you shouldn't have interfolded she shouldn't have interfolded we shouldn't have interfolded you shouldn't have interfolded they shouldn't have interfolded	I shouldn't have been interfolding you shouldn't have been interfolding she shouldn't have been interfolding we shouldn't have been interfolding you shouldn't have been interfolding they shouldn't have been interfolding

Interrogative form

Simple form	V-ing form
should I interfold? should you interfold? should she interfold? should we interfold? should you interfold? should they interfold?	should I be interfolding? should you be interfolding? should she be interfolding? should we be interfolding? should you be interfolding? should they be interfolding?
Perfect	V-ing perfect
should I have interfolded? should you have interfolded? should she have interfolded? should we have interfolded? should you have interfolded? should they have interfolded?	should I have been interfolding? should you have been interfolding? should she have been interfolding? should we have been interfolding? should you have been interfolding? should they have been interfolding?

Interro-negative form

Simple form	V-ing form
shouldn't I interfold? shouldn't you interfold? shouldn't she interfold? shouldn't we interfold? shouldn't you interfold? shouldn't they interfold?	shouldn't I be interfolding? shouldn't you be interfolding? shouldn't she be interfolding? shouldn't we be interfolding? shouldn't you be interfolding? shouldn't they be interfolding?
Perfect	V-ing perfect
shouldn't I have interfolded? shouldn't you have interfolded? shouldn't she have interfolded? shouldn't we have interfolded? shouldn't you have interfolded? shouldn't they have interfolded?	shouldn't I have been interfolding? shouldn't you have been interfolding? shouldn't she have been interfolding? shouldn't we have been interfolding? shouldn't you have been interfolding? shouldn't they have been interfolding?