English verb conjugation
SHOULD INTERFACE

Regular verb: interface - interfaced - interfaced

Affirmation

Simple form	V-ing form
I'd interface you'd interface she'd interface we'd interface you'd interface they'd interface	I'd be interfacing you'd be interfacing she'd be interfacing we'd be interfacing you'd be interfacing they'd be interfacing
Perfect	V-ing perfect
I should've interfaced you should've interfaced she should've interfaced we should've interfaced you should've interfaced they should've interfaced	I should've been interfacing you should've been interfacing she should've been interfacing we should've been interfacing you should've been interfacing they should've been interfacing

Negation

Simple form	V-ing form
I shouldn't interface you shouldn't interface she shouldn't interface we shouldn't interface you shouldn't interface they shouldn't interface	I shouldn't be interfacing you shouldn't be interfacing she shouldn't be interfacing we shouldn't be interfacing you shouldn't be interfacing they shouldn't be interfacing
Perfect	V-ing perfect
I shouldn't have interfaced you shouldn't have interfaced she shouldn't have interfaced we shouldn't have interfaced you shouldn't have interfaced they shouldn't have interfaced	I shouldn't have been interfacing you shouldn't have been interfacing she shouldn't have been interfacing we shouldn't have been interfacing you shouldn't have been interfacing they shouldn't have been interfacing

Interrogative form

Simple form	V-ing form
should I interface? should you interface? should she interface? should we interface? should you interface? should they interface?	should I be interfacing? should you be interfacing? should she be interfacing? should we be interfacing? should you be interfacing? should they be interfacing?
Perfect	V-ing perfect
should I have interfaced? should you have interfaced? should she have interfaced? should we have interfaced? should you have interfaced? should they have interfaced?	should I have been interfacing? should you have been interfacing? should she have been interfacing? should we have been interfacing? should you have been interfacing? should they have been interfacing?

Interro-negative form

Simple form	V-ing form
shouldn't I interface? shouldn't you interface? shouldn't she interface? shouldn't we interface? shouldn't you interface? shouldn't they interface?	shouldn't I be interfacing? shouldn't you be interfacing? shouldn't she be interfacing? shouldn't we be interfacing? shouldn't you be interfacing? shouldn't they be interfacing?
Perfect	V-ing perfect
shouldn't I have interfaced? shouldn't you have interfaced? shouldn't she have interfaced? shouldn't we have interfaced? shouldn't you have interfaced? shouldn't they have interfaced?	shouldn't I have been interfacing? shouldn't you have been interfacing? shouldn't she have been interfacing? shouldn't we have been interfacing? shouldn't you have been interfacing? shouldn't they have been interfacing?