English verb conjugation
SHOULD WARBLE

Regular verb: warble - warbled - warbled

Affirmation

Simple form	V-ing form
I'd warble you'd warble he'd warble we'd warble you'd warble they'd warble	I'd be warbling you'd be warbling he'd be warbling we'd be warbling you'd be warbling they'd be warbling
Perfect	V-ing perfect
I should've warbled you should've warbled he should've warbled we should've warbled you should've warbled they should've warbled	I should've been warbling you should've been warbling he should've been warbling we should've been warbling you should've been warbling they should've been warbling

Negation

Simple form	V-ing form
I shouldn't warble you shouldn't warble he shouldn't warble we shouldn't warble you shouldn't warble they shouldn't warble	I shouldn't be warbling you shouldn't be warbling he shouldn't be warbling we shouldn't be warbling you shouldn't be warbling they shouldn't be warbling
Perfect	V-ing perfect
I shouldn't have warbled you shouldn't have warbled he shouldn't have warbled we shouldn't have warbled you shouldn't have warbled they shouldn't have warbled	I shouldn't have been warbling you shouldn't have been warbling he shouldn't have been warbling we shouldn't have been warbling you shouldn't have been warbling they shouldn't have been warbling

Interrogative form

Simple form	V-ing form
should I warble? should you warble? should he warble? should we warble? should you warble? should they warble?	should I be warbling? should you be warbling? should he be warbling? should we be warbling? should you be warbling? should they be warbling?
Perfect	V-ing perfect
should I have warbled? should you have warbled? should he have warbled? should we have warbled? should you have warbled? should they have warbled?	should I have been warbling? should you have been warbling? should he have been warbling? should we have been warbling? should you have been warbling? should they have been warbling?

Interro-negative form

Simple form	V-ing form
shouldn't I warble? shouldn't you warble? shouldn't he warble? shouldn't we warble? shouldn't you warble? shouldn't they warble?	shouldn't I be warbling? shouldn't you be warbling? shouldn't he be warbling? shouldn't we be warbling? shouldn't you be warbling? shouldn't they be warbling?
Perfect	V-ing perfect
shouldn't I have warbled? shouldn't you have warbled? shouldn't he have warbled? shouldn't we have warbled? shouldn't you have warbled? shouldn't they have warbled?	shouldn't I have been warbling? shouldn't you have been warbling? shouldn't he have been warbling? shouldn't we have been warbling? shouldn't you have been warbling? shouldn't they have been warbling?