English verb conjugation
SHOULD EXTINGUISH

Regular verb: extinguish - extinguished - extinguished

Affirmation

Simple form	V-ing form
I'd extinguish you'd extinguish she'd extinguish we'd extinguish you'd extinguish they'd extinguish	I'd be extinguishing you'd be extinguishing she'd be extinguishing we'd be extinguishing you'd be extinguishing they'd be extinguishing
Perfect	V-ing perfect
I should've extinguished you should've extinguished she should've extinguished we should've extinguished you should've extinguished they should've extinguished	I should've been extinguishing you should've been extinguishing she should've been extinguishing we should've been extinguishing you should've been extinguishing they should've been extinguishing

Negation

Simple form	V-ing form
I shouldn't extinguish you shouldn't extinguish she shouldn't extinguish we shouldn't extinguish you shouldn't extinguish they shouldn't extinguish	I shouldn't be extinguishing you shouldn't be extinguishing she shouldn't be extinguishing we shouldn't be extinguishing you shouldn't be extinguishing they shouldn't be extinguishing
Perfect	V-ing perfect
I shouldn't have extinguished you shouldn't have extinguished she shouldn't have extinguished we shouldn't have extinguished you shouldn't have extinguished they shouldn't have extinguished	I shouldn't have been extinguishing you shouldn't have been extinguishing she shouldn't have been extinguishing we shouldn't have been extinguishing you shouldn't have been extinguishing they shouldn't have been extinguishing

Interrogative form

Simple form	V-ing form
should I extinguish? should you extinguish? should she extinguish? should we extinguish? should you extinguish? should they extinguish?	should I be extinguishing? should you be extinguishing? should she be extinguishing? should we be extinguishing? should you be extinguishing? should they be extinguishing?
Perfect	V-ing perfect
should I have extinguished? should you have extinguished? should she have extinguished? should we have extinguished? should you have extinguished? should they have extinguished?	should I have been extinguishing? should you have been extinguishing? should she have been extinguishing? should we have been extinguishing? should you have been extinguishing? should they have been extinguishing?

Interro-negative form

Simple form	V-ing form
shouldn't I extinguish? shouldn't you extinguish? shouldn't she extinguish? shouldn't we extinguish? shouldn't you extinguish? shouldn't they extinguish?	shouldn't I be extinguishing? shouldn't you be extinguishing? shouldn't she be extinguishing? shouldn't we be extinguishing? shouldn't you be extinguishing? shouldn't they be extinguishing?
Perfect	V-ing perfect
shouldn't I have extinguished? shouldn't you have extinguished? shouldn't she have extinguished? shouldn't we have extinguished? shouldn't you have extinguished? shouldn't they have extinguished?	shouldn't I have been extinguishing? shouldn't you have been extinguishing? shouldn't she have been extinguishing? shouldn't we have been extinguishing? shouldn't you have been extinguishing? shouldn't they have been extinguishing?