ought to hiss
Regular verb: hiss - hissed- hissed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to hiss
you ought to hiss
he ought to hiss
we ought to hiss
you ought to hiss
they ought to hiss 	I ought to be hissing
you ought to be hissing
he ought to be hissing
we ought to be hissing
you ought to be hissing
they ought to be hissing	I ought to have hissed
you ought to have hissed
he ought to have hissed
we ought to have hissed
you ought to have hissed
they ought to have hissed	I ought to have been hissing
you ought to have been hissing
he ought to have been hissing
we ought to have been hissing
you ought to have been hissing
they ought to have been hissing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to hiss
you oughtn't to hiss
he oughtn't to hiss
we oughtn't to hiss
you oughtn't to hiss
they oughtn't to hiss 	I oughtn't to be hissing
you oughtn't to be hissing
he oughtn't to be hissing
we oughtn't to be hissing
you oughtn't to be hissing
they oughtn't to be hissing	I oughtn't to have hissed
you oughtn't to have hissed
he oughtn't to have hissed
we oughtn't to have hissed
you oughtn't to have hissed
they oughtn't to have hissed	I oughtn't to have been hissing
you oughtn't to have been hissing
he oughtn't to have been hissing
we oughtn't to have been hissing
you oughtn't to have been hissing
they oughtn't to have been hissing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I hiss?
ought to you hiss?
ought to he hiss?
ought to we hiss?
ought to you hiss?
ought to they hiss? 	ought to I be hissing?
ought to you be hissing?
ought to he be hissing?
ought to we be hissing?
ought to you be hissing?
ought to they be hissing? 	ought to I have hissed?
ought to you have hissed?
ought to he have hissed?
ought to we have hissed?
ought to you have hissed?
ought to they have hissed? 	ought to I have been hissing?
ought to you have been hissing?
ought to he have been hissing?
ought to we have been hissing?
ought to you have been hissing?
ought to they have been hissing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to hiss?
oughtn't you to hiss?
oughtn't he to hiss?
oughtn't we to hiss?
oughtn't you to hiss?
oughtn't they to hiss? 	oughtn't I to be hissing?
oughtn't you to be hissing?
oughtn't he to be hissing?
oughtn't we to be hissing?
oughtn't you to be hissing?
oughtn't they to be hissing? 	oughtn't I to have hissed?
oughtn't you to have hissed?
oughtn't he to have hissed?
oughtn't we to have hissed?
oughtn't you to have hissed?
oughtn't they to have hissed? 	oughtn't I to have been hissing?
oughtn't you to have been hissing?
oughtn't he to have been hissing?
oughtn't we to have been hissing?
oughtn't you to have been hissing?
oughtn't they to have been hissing?