English verb conjugation
SHOULD FLUNK

Regular verb: flunk - flunked - flunked

Affirmation

Simple form	V-ing form
I'd flunk you'd flunk he'd flunk we'd flunk you'd flunk they'd flunk	I'd be flunking you'd be flunking he'd be flunking we'd be flunking you'd be flunking they'd be flunking
Perfect	V-ing perfect
I should've flunked you should've flunked he should've flunked we should've flunked you should've flunked they should've flunked	I should've been flunking you should've been flunking he should've been flunking we should've been flunking you should've been flunking they should've been flunking

Negation

Simple form	V-ing form
I shouldn't flunk you shouldn't flunk he shouldn't flunk we shouldn't flunk you shouldn't flunk they shouldn't flunk	I shouldn't be flunking you shouldn't be flunking he shouldn't be flunking we shouldn't be flunking you shouldn't be flunking they shouldn't be flunking
Perfect	V-ing perfect
I shouldn't have flunked you shouldn't have flunked he shouldn't have flunked we shouldn't have flunked you shouldn't have flunked they shouldn't have flunked	I shouldn't have been flunking you shouldn't have been flunking he shouldn't have been flunking we shouldn't have been flunking you shouldn't have been flunking they shouldn't have been flunking

Interrogative form

Simple form	V-ing form
should I flunk? should you flunk? should he flunk? should we flunk? should you flunk? should they flunk?	should I be flunking? should you be flunking? should he be flunking? should we be flunking? should you be flunking? should they be flunking?
Perfect	V-ing perfect
should I have flunked? should you have flunked? should he have flunked? should we have flunked? should you have flunked? should they have flunked?	should I have been flunking? should you have been flunking? should he have been flunking? should we have been flunking? should you have been flunking? should they have been flunking?

Interro-negative form

Simple form	V-ing form
shouldn't I flunk? shouldn't you flunk? shouldn't he flunk? shouldn't we flunk? shouldn't you flunk? shouldn't they flunk?	shouldn't I be flunking? shouldn't you be flunking? shouldn't he be flunking? shouldn't we be flunking? shouldn't you be flunking? shouldn't they be flunking?
Perfect	V-ing perfect
shouldn't I have flunked? shouldn't you have flunked? shouldn't he have flunked? shouldn't we have flunked? shouldn't you have flunked? shouldn't they have flunked?	shouldn't I have been flunking? shouldn't you have been flunking? shouldn't he have been flunking? shouldn't we have been flunking? shouldn't you have been flunking? shouldn't they have been flunking?