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
he 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
he 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
he 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
he 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 ought not to biff
you ought not to biff
he ought not to biff
we ought not to biff
you ought not to biff
they ought not to biff 	I ought not to biffing
you ought not to biffing
he ought not to biffing
we ought not to biffing
you ought not to biffing
they ought not to biffing	I ought not to have biffed
you ought not to have biffed
he ought not to have biffed
we ought not to have biffed
you ought not to have biffed
they ought not to have biffed	I ought not to have been biffing
you ought not to have been biffing
he ought not to have been biffing
we ought not to have been biffing
you ought not to have been biffing
they ought not 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 he 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 he 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 he 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 he 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 	
ought I not to biff?
ought you not to biff?
ought he not to biff?
ought we not to biff?
ought you not to biff?
ought they not to biff? 	ought I not to be biffing?
ought you not to be biffing?
ought he not to be biffing?
ought we not to be biffing?
ought you not to be biffing?
ought they not to be biffing? 	ought I not to have biffed?
ought you not to have biffed?
ought he not to have biffed?
ought we not to have biffed?
ought you not to have biffed?
ought they not to have biffed? 	ought I not to have been biffing?
ought you not to have been biffing?
ought he not to have been biffing?
ought we not to have been biffing?
ought you not to have been biffing?
ought they not to have been biffing?