ought to slither
Regular verb: slither - slithered- slithered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to slither
you ought to slither
she ought to slither
we ought to slither
you ought to slither
they ought to slither 	I ought to be slithering
you ought to be slithering
she ought to be slithering
we ought to be slithering
you ought to be slithering
they ought to be slithering	I ought to have slithered
you ought to have slithered
she ought to have slithered
we ought to have slithered
you ought to have slithered
they ought to have slithered	I ought to have been slithering
you ought to have been slithering
she ought to have been slithering
we ought to have been slithering
you ought to have been slithering
they ought to have been slithering	

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

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I slither?
ought to you slither?
ought to she slither?
ought to we slither?
ought to you slither?
ought to they slither? 	ought to I be slithering?
ought to you be slithering?
ought to she be slithering?
ought to we be slithering?
ought to you be slithering?
ought to they be slithering? 	ought to I have slithered?
ought to you have slithered?
ought to she have slithered?
ought to we have slithered?
ought to you have slithered?
ought to they have slithered? 	ought to I have been slithering?
ought to you have been slithering?
ought to she have been slithering?
ought to we have been slithering?
ought to you have been slithering?
ought to they have been slithering? 	

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