English verb conjugation
SHOULD SECERN

Regular verb: secern - secerned - secerned

Affirmation

Simple form	V-ing form
I'd secern you'd secern she'd secern we'd secern you'd secern they'd secern	I'd be secerning you'd be secerning she'd be secerning we'd be secerning you'd be secerning they'd be secerning
Perfect	V-ing perfect
I should've secerned you should've secerned she should've secerned we should've secerned you should've secerned they should've secerned	I should've been secerning you should've been secerning she should've been secerning we should've been secerning you should've been secerning they should've been secerning

Negation

Simple form	V-ing form
I shouldn't secern you shouldn't secern she shouldn't secern we shouldn't secern you shouldn't secern they shouldn't secern	I shouldn't be secerning you shouldn't be secerning she shouldn't be secerning we shouldn't be secerning you shouldn't be secerning they shouldn't be secerning
Perfect	V-ing perfect
I shouldn't have secerned you shouldn't have secerned she shouldn't have secerned we shouldn't have secerned you shouldn't have secerned they shouldn't have secerned	I shouldn't have been secerning you shouldn't have been secerning she shouldn't have been secerning we shouldn't have been secerning you shouldn't have been secerning they shouldn't have been secerning

Interrogative form

Simple form	V-ing form
should I secern? should you secern? should she secern? should we secern? should you secern? should they secern?	should I be secerning? should you be secerning? should she be secerning? should we be secerning? should you be secerning? should they be secerning?
Perfect	V-ing perfect
should I have secerned? should you have secerned? should she have secerned? should we have secerned? should you have secerned? should they have secerned?	should I have been secerning? should you have been secerning? should she have been secerning? should we have been secerning? should you have been secerning? should they have been secerning?

Interro-negative form

Simple form	V-ing form
shouldn't I secern? shouldn't you secern? shouldn't she secern? shouldn't we secern? shouldn't you secern? shouldn't they secern?	shouldn't I be secerning? shouldn't you be secerning? shouldn't she be secerning? shouldn't we be secerning? shouldn't you be secerning? shouldn't they be secerning?
Perfect	V-ing perfect
shouldn't I have secerned? shouldn't you have secerned? shouldn't she have secerned? shouldn't we have secerned? shouldn't you have secerned? shouldn't they have secerned?	shouldn't I have been secerning? shouldn't you have been secerning? shouldn't she have been secerning? shouldn't we have been secerning? shouldn't you have been secerning? shouldn't they have been secerning?