ought to muff
Regular verb: muff - muffed- muffed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to muff
you ought to muff
he ought to muff
we ought to muff
you ought to muff
they ought to muff 	I ought to be muffing
you ought to be muffing
he ought to be muffing
we ought to be muffing
you ought to be muffing
they ought to be muffing	I ought to have muffed
you ought to have muffed
he ought to have muffed
we ought to have muffed
you ought to have muffed
they ought to have muffed	I ought to have been muffing
you ought to have been muffing
he ought to have been muffing
we ought to have been muffing
you ought to have been muffing
they ought to have been muffing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to muff
you oughtn't to muff
he oughtn't to muff
we oughtn't to muff
you oughtn't to muff
they oughtn't to muff 	I oughtn't to be muffing
you oughtn't to be muffing
he oughtn't to be muffing
we oughtn't to be muffing
you oughtn't to be muffing
they oughtn't to be muffing	I oughtn't to have muffed
you oughtn't to have muffed
he oughtn't to have muffed
we oughtn't to have muffed
you oughtn't to have muffed
they oughtn't to have muffed	I oughtn't to have been muffing
you oughtn't to have been muffing
he oughtn't to have been muffing
we oughtn't to have been muffing
you oughtn't to have been muffing
they oughtn't to have been muffing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I muff?
ought to you muff?
ought to he muff?
ought to we muff?
ought to you muff?
ought to they muff? 	ought to I be muffing?
ought to you be muffing?
ought to he be muffing?
ought to we be muffing?
ought to you be muffing?
ought to they be muffing? 	ought to I have muffed?
ought to you have muffed?
ought to he have muffed?
ought to we have muffed?
ought to you have muffed?
ought to they have muffed? 	ought to I have been muffing?
ought to you have been muffing?
ought to he have been muffing?
ought to we have been muffing?
ought to you have been muffing?
ought to they have been muffing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to muff?
oughtn't you to muff?
oughtn't he to muff?
oughtn't we to muff?
oughtn't you to muff?
oughtn't they to muff? 	oughtn't I to be muffing?
oughtn't you to be muffing?
oughtn't he to be muffing?
oughtn't we to be muffing?
oughtn't you to be muffing?
oughtn't they to be muffing? 	oughtn't I to have muffed?
oughtn't you to have muffed?
oughtn't he to have muffed?
oughtn't we to have muffed?
oughtn't you to have muffed?
oughtn't they to have muffed? 	oughtn't I to have been muffing?
oughtn't you to have been muffing?
oughtn't he to have been muffing?
oughtn't we to have been muffing?
oughtn't you to have been muffing?
oughtn't they to have been muffing?