should snack
Regular verb: snack - snacked- snacked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd snack
you'd snack
he'd snack
we'd snack
you'd snack
they'd snack 	I'd be snacking
you'd be snacking
he'd be snacking
we'd be snacking
you'd be snacking
they'd be snacking	I should've snacked
you should've snacked
he should've snacked
we should've snacked
you should've snacked
they should've snacked	I should've been snacking
you should've been snacking
he should've been snacking
we should've been snacking
you should've been snacking
they should've been snacking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't snack
you shouldn't snack
he shouldn't snack
we shouldn't snack
you shouldn't snack
they shouldn't snack 	I shouldn't be snacking
you shouldn't be snacking
he shouldn't be snacking
we shouldn't be snacking
you shouldn't be snacking
they shouldn't be snacking	I shouldn't have snacked
you shouldn't have snacked
he shouldn't have snacked
we shouldn't have snacked
you shouldn't have snacked
they shouldn't have snacked	I shouldn't have been snacking
you shouldn't have been snacking
he shouldn't have been snacking
we shouldn't have been snacking
you shouldn't have been snacking
they shouldn't have been snacking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I snack?
should you snack?
should he snack?
should we snack?
should you snack?
should they snack? 	should I be snacking?
should you be snacking?
should he be snacking?
should we be snacking?
should you be snacking?
should they be snacking? 	should I have snacked?
should you have snacked?
should he have snacked?
should we have snacked?
should you have snacked?
should they have snacked? 	should I have been snacking?
should you have been snacking?
should he have been snacking?
should we have been snacking?
should you have been snacking?
should they have been snacking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I snack?
shouldn't you snack?
shouldn't he snack?
shouldn't we snack?
shouldn't you snack?
shouldn't they snack? 	shouldn't I be snacking?
shouldn't you be snacking?
shouldn't he be snacking?
shouldn't we be snacking?
shouldn't you be snacking?
shouldn't they be snacking? 	shouldn't I have snacked?
shouldn't you have snacked?
shouldn't he have snacked?
shouldn't we have snacked?
shouldn't you have snacked?
shouldn't they have snacked? 	shouldn't I have been snacking?
shouldn't you have been snacking?
shouldn't he have been snacking?
shouldn't we have been snacking?
shouldn't you have been snacking?
shouldn't they have been snacking?