English verb conjugation
OUGHT TO MUFF

Regular verb: muff - muffed - muffed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?