English verb conjugation
OUGHT TO FELL

Regular verb: fell - felled - felled

Affirmation

Simple form	V-ing form
I ought to fell you ought to fell she ought to fell we ought to fell you ought to fell they ought to fell	I ought to be felling you ought to be felling she ought to be felling we ought to be felling you ought to be felling they ought to be felling
Perfect	V-ing perfect
I ought to have felled you ought to have felled she ought to have felled we ought to have felled you ought to have felled they ought to have felled	I ought to have been felling you ought to have been felling she ought to have been felling we ought to have been felling you ought to have been felling they ought to have been felling

Negation

Simple form	V-ing form
I oughtn't to fell you oughtn't to fell she oughtn't to fell we oughtn't to fell you oughtn't to fell they oughtn't to fell	I oughtn't to be felling you oughtn't to be felling she oughtn't to be felling we oughtn't to be felling you oughtn't to be felling they oughtn't to be felling
Perfect	V-ing perfect
I oughtn't to have felled you oughtn't to have felled she oughtn't to have felled we oughtn't to have felled you oughtn't to have felled they oughtn't to have felled	I oughtn't to have been felling you oughtn't to have been felling she oughtn't to have been felling we oughtn't to have been felling you oughtn't to have been felling they oughtn't to have been felling

Interrogative form

Simple form	V-ing form
ought to I fell? ought to you fell? ought to she fell? ought to we fell? ought to you fell? ought to they fell?	ought to I be felling? ought to you be felling? ought to she be felling? ought to we be felling? ought to you be felling? ought to they be felling?
Perfect	V-ing perfect
ought to I have felled? ought to you have felled? ought to she have felled? ought to we have felled? ought to you have felled? ought to they have felled?	ought to I have been felling? ought to you have been felling? ought to she have been felling? ought to we have been felling? ought to you have been felling? ought to they have been felling?

Interro-negative form

Simple form	V-ing form
oughtn't I to fell? oughtn't you to fell? oughtn't she to fell? oughtn't we to fell? oughtn't you to fell? oughtn't they to fell?	oughtn't I to be felling? oughtn't you to be felling? oughtn't she to be felling? oughtn't we to be felling? oughtn't you to be felling? oughtn't they to be felling?
Perfect	V-ing perfect
oughtn't I to have felled? oughtn't you to have felled? oughtn't she to have felled? oughtn't we to have felled? oughtn't you to have felled? oughtn't they to have felled?	oughtn't I to have been felling? oughtn't you to have been felling? oughtn't she to have been felling? oughtn't we to have been felling? oughtn't you to have been felling? oughtn't they to have been felling?