English verb conjugation
SHOULD PERTURB

Regular verb: perturb - perturbed - perturbed

Affirmation

Simple form	V-ing form
I'd perturb you'd perturb he'd perturb we'd perturb you'd perturb they'd perturb	I'd be perturbing you'd be perturbing he'd be perturbing we'd be perturbing you'd be perturbing they'd be perturbing
Perfect	V-ing perfect
I should've perturbed you should've perturbed he should've perturbed we should've perturbed you should've perturbed they should've perturbed	I should've been perturbing you should've been perturbing he should've been perturbing we should've been perturbing you should've been perturbing they should've been perturbing

Negation

Simple form	V-ing form
I shouldn't perturb you shouldn't perturb he shouldn't perturb we shouldn't perturb you shouldn't perturb they shouldn't perturb	I shouldn't be perturbing you shouldn't be perturbing he shouldn't be perturbing we shouldn't be perturbing you shouldn't be perturbing they shouldn't be perturbing
Perfect	V-ing perfect
I shouldn't have perturbed you shouldn't have perturbed he shouldn't have perturbed we shouldn't have perturbed you shouldn't have perturbed they shouldn't have perturbed	I shouldn't have been perturbing you shouldn't have been perturbing he shouldn't have been perturbing we shouldn't have been perturbing you shouldn't have been perturbing they shouldn't have been perturbing

Interrogative form

Simple form	V-ing form
should I perturb? should you perturb? should he perturb? should we perturb? should you perturb? should they perturb?	should I be perturbing? should you be perturbing? should he be perturbing? should we be perturbing? should you be perturbing? should they be perturbing?
Perfect	V-ing perfect
should I have perturbed? should you have perturbed? should he have perturbed? should we have perturbed? should you have perturbed? should they have perturbed?	should I have been perturbing? should you have been perturbing? should he have been perturbing? should we have been perturbing? should you have been perturbing? should they have been perturbing?

Interro-negative form

Simple form	V-ing form
shouldn't I perturb? shouldn't you perturb? shouldn't he perturb? shouldn't we perturb? shouldn't you perturb? shouldn't they perturb?	shouldn't I be perturbing? shouldn't you be perturbing? shouldn't he be perturbing? shouldn't we be perturbing? shouldn't you be perturbing? shouldn't they be perturbing?
Perfect	V-ing perfect
shouldn't I have perturbed? shouldn't you have perturbed? shouldn't he have perturbed? shouldn't we have perturbed? shouldn't you have perturbed? shouldn't they have perturbed?	shouldn't I have been perturbing? shouldn't you have been perturbing? shouldn't he have been perturbing? shouldn't we have been perturbing? shouldn't you have been perturbing? shouldn't they have been perturbing?