English verb conjugation
SHOULD FURL

Regular verb: furl - furled - furled

Affirmation

Simple form	V-ing form
I'd furl you'd furl he'd furl we'd furl you'd furl they'd furl	I'd be furling you'd be furling he'd be furling we'd be furling you'd be furling they'd be furling
Perfect	V-ing perfect
I should've furled you should've furled he should've furled we should've furled you should've furled they should've furled	I should've been furling you should've been furling he should've been furling we should've been furling you should've been furling they should've been furling

Negation

Simple form	V-ing form
I shouldn't furl you shouldn't furl he shouldn't furl we shouldn't furl you shouldn't furl they shouldn't furl	I shouldn't be furling you shouldn't be furling he shouldn't be furling we shouldn't be furling you shouldn't be furling they shouldn't be furling
Perfect	V-ing perfect
I shouldn't have furled you shouldn't have furled he shouldn't have furled we shouldn't have furled you shouldn't have furled they shouldn't have furled	I shouldn't have been furling you shouldn't have been furling he shouldn't have been furling we shouldn't have been furling you shouldn't have been furling they shouldn't have been furling

Interrogative form

Simple form	V-ing form
should I furl? should you furl? should he furl? should we furl? should you furl? should they furl?	should I be furling? should you be furling? should he be furling? should we be furling? should you be furling? should they be furling?
Perfect	V-ing perfect
should I have furled? should you have furled? should he have furled? should we have furled? should you have furled? should they have furled?	should I have been furling? should you have been furling? should he have been furling? should we have been furling? should you have been furling? should they have been furling?

Interro-negative form

Simple form	V-ing form
shouldn't I furl? shouldn't you furl? shouldn't he furl? shouldn't we furl? shouldn't you furl? shouldn't they furl?	shouldn't I be furling? shouldn't you be furling? shouldn't he be furling? shouldn't we be furling? shouldn't you be furling? shouldn't they be furling?
Perfect	V-ing perfect
shouldn't I have furled? shouldn't you have furled? shouldn't he have furled? shouldn't we have furled? shouldn't you have furled? shouldn't they have furled?	shouldn't I have been furling? shouldn't you have been furling? shouldn't he have been furling? shouldn't we have been furling? shouldn't you have been furling? shouldn't they have been furling?