ought to biff
Regular verb: biff - biffed- biffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to biff
you ought to biff
she ought to biff
we ought to biff
you ought to biff
they ought to biff 	I ought to be biffing
you ought to be biffing
she ought to be biffing
we ought to be biffing
you ought to be biffing
they ought to be biffing	I ought to have biffed
you ought to have biffed
she ought to have biffed
we ought to have biffed
you ought to have biffed
they ought to have biffed	I ought to have been biffing
you ought to have been biffing
she ought to have been biffing
we ought to have been biffing
you ought to have been biffing
they ought to have been biffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to biff
you oughtn't to biff
she oughtn't to biff
we oughtn't to biff
you oughtn't to biff
they oughtn't to biff 	I oughtn't to be biffing
you oughtn't to be biffing
she oughtn't to be biffing
we oughtn't to be biffing
you oughtn't to be biffing
they oughtn't to be biffing	I oughtn't to have biffed
you oughtn't to have biffed
she oughtn't to have biffed
we oughtn't to have biffed
you oughtn't to have biffed
they oughtn't to have biffed	I oughtn't to have been biffing
you oughtn't to have been biffing
she oughtn't to have been biffing
we oughtn't to have been biffing
you oughtn't to have been biffing
they oughtn't to have been biffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I biff?
ought to you biff?
ought to she biff?
ought to we biff?
ought to you biff?
ought to they biff? 	ought to I be biffing?
ought to you be biffing?
ought to she be biffing?
ought to we be biffing?
ought to you be biffing?
ought to they be biffing? 	ought to I have biffed?
ought to you have biffed?
ought to she have biffed?
ought to we have biffed?
ought to you have biffed?
ought to they have biffed? 	ought to I have been biffing?
ought to you have been biffing?
ought to she have been biffing?
ought to we have been biffing?
ought to you have been biffing?
ought to they have been biffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to biff?
oughtn't you to biff?
oughtn't she to biff?
oughtn't we to biff?
oughtn't you to biff?
oughtn't they to biff? 	oughtn't I to be biffing?
oughtn't you to be biffing?
oughtn't she to be biffing?
oughtn't we to be biffing?
oughtn't you to be biffing?
oughtn't they to be biffing? 	oughtn't I to have biffed?
oughtn't you to have biffed?
oughtn't she to have biffed?
oughtn't we to have biffed?
oughtn't you to have biffed?
oughtn't they to have biffed? 	oughtn't I to have been biffing?
oughtn't you to have been biffing?
oughtn't she to have been biffing?
oughtn't we to have been biffing?
oughtn't you to have been biffing?
oughtn't they to have been biffing?