English verb conjugation
SHOULD SCOWL

Regular verb: scowl - scowled - scowled

Affirmation

Simple form	V-ing form
I'd scowl you'd scowl he'd scowl we'd scowl you'd scowl they'd scowl	I'd be scowling you'd be scowling he'd be scowling we'd be scowling you'd be scowling they'd be scowling
Perfect	V-ing perfect
I should've scowled you should've scowled he should've scowled we should've scowled you should've scowled they should've scowled	I should've been scowling you should've been scowling he should've been scowling we should've been scowling you should've been scowling they should've been scowling

Negation

Simple form	V-ing form
I shouldn't scowl you shouldn't scowl he shouldn't scowl we shouldn't scowl you shouldn't scowl they shouldn't scowl	I shouldn't be scowling you shouldn't be scowling he shouldn't be scowling we shouldn't be scowling you shouldn't be scowling they shouldn't be scowling
Perfect	V-ing perfect
I shouldn't have scowled you shouldn't have scowled he shouldn't have scowled we shouldn't have scowled you shouldn't have scowled they shouldn't have scowled	I shouldn't have been scowling you shouldn't have been scowling he shouldn't have been scowling we shouldn't have been scowling you shouldn't have been scowling they shouldn't have been scowling

Interrogative form

Simple form	V-ing form
should I scowl? should you scowl? should he scowl? should we scowl? should you scowl? should they scowl?	should I be scowling? should you be scowling? should he be scowling? should we be scowling? should you be scowling? should they be scowling?
Perfect	V-ing perfect
should I have scowled? should you have scowled? should he have scowled? should we have scowled? should you have scowled? should they have scowled?	should I have been scowling? should you have been scowling? should he have been scowling? should we have been scowling? should you have been scowling? should they have been scowling?

Interro-negative form

Simple form	V-ing form
shouldn't I scowl? shouldn't you scowl? shouldn't he scowl? shouldn't we scowl? shouldn't you scowl? shouldn't they scowl?	shouldn't I be scowling? shouldn't you be scowling? shouldn't he be scowling? shouldn't we be scowling? shouldn't you be scowling? shouldn't they be scowling?
Perfect	V-ing perfect
shouldn't I have scowled? shouldn't you have scowled? shouldn't he have scowled? shouldn't we have scowled? shouldn't you have scowled? shouldn't they have scowled?	shouldn't I have been scowling? shouldn't you have been scowling? shouldn't he have been scowling? shouldn't we have been scowling? shouldn't you have been scowling? shouldn't they have been scowling?