should sniffle
Regular verb: sniffle - sniffled- sniffled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd sniffle
you'd sniffle
he'd sniffle
we'd sniffle
you'd sniffle
they'd sniffle 	I'd be sniffling
you'd be sniffling
he'd be sniffling
we'd be sniffling
you'd be sniffling
they'd be sniffling	I should've sniffled
you should've sniffled
he should've sniffled
we should've sniffled
you should've sniffled
they should've sniffled	I should've been sniffling
you should've been sniffling
he should've been sniffling
we should've been sniffling
you should've been sniffling
they should've been sniffling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't sniffle
you shouldn't sniffle
he shouldn't sniffle
we shouldn't sniffle
you shouldn't sniffle
they shouldn't sniffle 	I shouldn't be sniffling
you shouldn't be sniffling
he shouldn't be sniffling
we shouldn't be sniffling
you shouldn't be sniffling
they shouldn't be sniffling	I shouldn't have sniffled
you shouldn't have sniffled
he shouldn't have sniffled
we shouldn't have sniffled
you shouldn't have sniffled
they shouldn't have sniffled	I shouldn't have been sniffling
you shouldn't have been sniffling
he shouldn't have been sniffling
we shouldn't have been sniffling
you shouldn't have been sniffling
they shouldn't have been sniffling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I sniffle?
should you sniffle?
should he sniffle?
should we sniffle?
should you sniffle?
should they sniffle? 	should I be sniffling?
should you be sniffling?
should he be sniffling?
should we be sniffling?
should you be sniffling?
should they be sniffling? 	should I have sniffled?
should you have sniffled?
should he have sniffled?
should we have sniffled?
should you have sniffled?
should they have sniffled? 	should I have been sniffling?
should you have been sniffling?
should he have been sniffling?
should we have been sniffling?
should you have been sniffling?
should they have been sniffling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I sniffle?
shouldn't you sniffle?
shouldn't he sniffle?
shouldn't we sniffle?
shouldn't you sniffle?
shouldn't they sniffle? 	shouldn't I be sniffling?
shouldn't you be sniffling?
shouldn't he be sniffling?
shouldn't we be sniffling?
shouldn't you be sniffling?
shouldn't they be sniffling? 	shouldn't I have sniffled?
shouldn't you have sniffled?
shouldn't he have sniffled?
shouldn't we have sniffled?
shouldn't you have sniffled?
shouldn't they have sniffled? 	shouldn't I have been sniffling?
shouldn't you have been sniffling?
shouldn't he have been sniffling?
shouldn't we have been sniffling?
shouldn't you have been sniffling?
shouldn't they have been sniffling?