English verb conjugation
SHOULD HOWL

Regular verb: howl - howled - howled

Affirmation

Simple form	V-ing form
I'd howl you'd howl she'd howl we'd howl you'd howl they'd howl	I'd be howling you'd be howling she'd be howling we'd be howling you'd be howling they'd be howling
Perfect	V-ing perfect
I should've howled you should've howled she should've howled we should've howled you should've howled they should've howled	I should've been howling you should've been howling she should've been howling we should've been howling you should've been howling they should've been howling

Negation

Simple form	V-ing form
I shouldn't howl you shouldn't howl she shouldn't howl we shouldn't howl you shouldn't howl they shouldn't howl	I shouldn't be howling you shouldn't be howling she shouldn't be howling we shouldn't be howling you shouldn't be howling they shouldn't be howling
Perfect	V-ing perfect
I shouldn't have howled you shouldn't have howled she shouldn't have howled we shouldn't have howled you shouldn't have howled they shouldn't have howled	I shouldn't have been howling you shouldn't have been howling she shouldn't have been howling we shouldn't have been howling you shouldn't have been howling they shouldn't have been howling

Interrogative form

Simple form	V-ing form
should I howl? should you howl? should she howl? should we howl? should you howl? should they howl?	should I be howling? should you be howling? should she be howling? should we be howling? should you be howling? should they be howling?
Perfect	V-ing perfect
should I have howled? should you have howled? should she have howled? should we have howled? should you have howled? should they have howled?	should I have been howling? should you have been howling? should she have been howling? should we have been howling? should you have been howling? should they have been howling?

Interro-negative form

Simple form	V-ing form
shouldn't I howl? shouldn't you howl? shouldn't she howl? shouldn't we howl? shouldn't you howl? shouldn't they howl?	shouldn't I be howling? shouldn't you be howling? shouldn't she be howling? shouldn't we be howling? shouldn't you be howling? shouldn't they be howling?
Perfect	V-ing perfect
shouldn't I have howled? shouldn't you have howled? shouldn't she have howled? shouldn't we have howled? shouldn't you have howled? shouldn't they have howled?	shouldn't I have been howling? shouldn't you have been howling? shouldn't she have been howling? shouldn't we have been howling? shouldn't you have been howling? shouldn't they have been howling?