should slither
Regular verb: slither - slithered- slithered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I'd slither
you'd slither
he'd slither
we'd slither
you'd slither
they'd slither 	I'd be slithering
you'd be slithering
he'd be slithering
we'd be slithering
you'd be slithering
they'd be slithering	I should've slithered
you should've slithered
he should've slithered
we should've slithered
you should've slithered
they should've slithered	I should've been slithering
you should've been slithering
he should've been slithering
we should've been slithering
you should've been slithering
they should've been slithering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I shouldn't slither
you shouldn't slither
he shouldn't slither
we shouldn't slither
you shouldn't slither
they shouldn't slither 	I shouldn't be slithering
you shouldn't be slithering
he shouldn't be slithering
we shouldn't be slithering
you shouldn't be slithering
they shouldn't be slithering	I shouldn't have slithered
you shouldn't have slithered
he shouldn't have slithered
we shouldn't have slithered
you shouldn't have slithered
they shouldn't have slithered	I shouldn't have been slithering
you shouldn't have been slithering
he shouldn't have been slithering
we shouldn't have been slithering
you shouldn't have been slithering
they shouldn't have been slithering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
should I slither?
should you slither?
should he slither?
should we slither?
should you slither?
should they slither? 	should I be slithering?
should you be slithering?
should he be slithering?
should we be slithering?
should you be slithering?
should they be slithering? 	should I have slithered?
should you have slithered?
should he have slithered?
should we have slithered?
should you have slithered?
should they have slithered? 	should I have been slithering?
should you have been slithering?
should he have been slithering?
should we have been slithering?
should you have been slithering?
should they have been slithering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
shouldn't I slither?
shouldn't you slither?
shouldn't he slither?
shouldn't we slither?
shouldn't you slither?
shouldn't they slither? 	shouldn't I be slithering?
shouldn't you be slithering?
shouldn't he be slithering?
shouldn't we be slithering?
shouldn't you be slithering?
shouldn't they be slithering? 	shouldn't I have slithered?
shouldn't you have slithered?
shouldn't he have slithered?
shouldn't we have slithered?
shouldn't you have slithered?
shouldn't they have slithered? 	shouldn't I have been slithering?
shouldn't you have been slithering?
shouldn't he have been slithering?
shouldn't we have been slithering?
shouldn't you have been slithering?
shouldn't they have been slithering?