English verb conjugation
SHOULD SNICKER

Regular verb: snicker - snickered - snickered

Affirmation

Simple form	V-ing form
I'd snicker you'd snicker he'd snicker we'd snicker you'd snicker they'd snicker	I'd be snickering you'd be snickering he'd be snickering we'd be snickering you'd be snickering they'd be snickering
Perfect	V-ing perfect
I should've snickered you should've snickered he should've snickered we should've snickered you should've snickered they should've snickered	I should've been snickering you should've been snickering he should've been snickering we should've been snickering you should've been snickering they should've been snickering

Negation

Simple form	V-ing form
I shouldn't snicker you shouldn't snicker he shouldn't snicker we shouldn't snicker you shouldn't snicker they shouldn't snicker	I shouldn't be snickering you shouldn't be snickering he shouldn't be snickering we shouldn't be snickering you shouldn't be snickering they shouldn't be snickering
Perfect	V-ing perfect
I shouldn't have snickered you shouldn't have snickered he shouldn't have snickered we shouldn't have snickered you shouldn't have snickered they shouldn't have snickered	I shouldn't have been snickering you shouldn't have been snickering he shouldn't have been snickering we shouldn't have been snickering you shouldn't have been snickering they shouldn't have been snickering

Interrogative form

Simple form	V-ing form
should I snicker? should you snicker? should he snicker? should we snicker? should you snicker? should they snicker?	should I be snickering? should you be snickering? should he be snickering? should we be snickering? should you be snickering? should they be snickering?
Perfect	V-ing perfect
should I have snickered? should you have snickered? should he have snickered? should we have snickered? should you have snickered? should they have snickered?	should I have been snickering? should you have been snickering? should he have been snickering? should we have been snickering? should you have been snickering? should they have been snickering?

Interro-negative form

Simple form	V-ing form
shouldn't I snicker? shouldn't you snicker? shouldn't he snicker? shouldn't we snicker? shouldn't you snicker? shouldn't they snicker?	shouldn't I be snickering? shouldn't you be snickering? shouldn't he be snickering? shouldn't we be snickering? shouldn't you be snickering? shouldn't they be snickering?
Perfect	V-ing perfect
shouldn't I have snickered? shouldn't you have snickered? shouldn't he have snickered? shouldn't we have snickered? shouldn't you have snickered? shouldn't they have snickered?	shouldn't I have been snickering? shouldn't you have been snickering? shouldn't he have been snickering? shouldn't we have been snickering? shouldn't you have been snickering? shouldn't they have been snickering?