English verb conjugation
OUGHT TO KNELL

Regular verb: knell - knelled - knelled

Affirmation

Simple form	V-ing form
I ought to knell you ought to knell he ought to knell we ought to knell you ought to knell they ought to knell	I ought to be knelling you ought to be knelling he ought to be knelling we ought to be knelling you ought to be knelling they ought to be knelling
Perfect	V-ing perfect
I ought to have knelled you ought to have knelled he ought to have knelled we ought to have knelled you ought to have knelled they ought to have knelled	I ought to have been knelling you ought to have been knelling he ought to have been knelling we ought to have been knelling you ought to have been knelling they ought to have been knelling

Negation

Simple form	V-ing form
I oughtn't to knell you oughtn't to knell he oughtn't to knell we oughtn't to knell you oughtn't to knell they oughtn't to knell	I oughtn't to be knelling you oughtn't to be knelling he oughtn't to be knelling we oughtn't to be knelling you oughtn't to be knelling they oughtn't to be knelling
Perfect	V-ing perfect
I oughtn't to have knelled you oughtn't to have knelled he oughtn't to have knelled we oughtn't to have knelled you oughtn't to have knelled they oughtn't to have knelled	I oughtn't to have been knelling you oughtn't to have been knelling he oughtn't to have been knelling we oughtn't to have been knelling you oughtn't to have been knelling they oughtn't to have been knelling

Interrogative form

Simple form	V-ing form
ought to I knell? ought to you knell? ought to he knell? ought to we knell? ought to you knell? ought to they knell?	ought to I be knelling? ought to you be knelling? ought to he be knelling? ought to we be knelling? ought to you be knelling? ought to they be knelling?
Perfect	V-ing perfect
ought to I have knelled? ought to you have knelled? ought to he have knelled? ought to we have knelled? ought to you have knelled? ought to they have knelled?	ought to I have been knelling? ought to you have been knelling? ought to he have been knelling? ought to we have been knelling? ought to you have been knelling? ought to they have been knelling?

Interro-negative form

Simple form	V-ing form
oughtn't I to knell? oughtn't you to knell? oughtn't he to knell? oughtn't we to knell? oughtn't you to knell? oughtn't they to knell?	oughtn't I to be knelling? oughtn't you to be knelling? oughtn't he to be knelling? oughtn't we to be knelling? oughtn't you to be knelling? oughtn't they to be knelling?
Perfect	V-ing perfect
oughtn't I to have knelled? oughtn't you to have knelled? oughtn't he to have knelled? oughtn't we to have knelled? oughtn't you to have knelled? oughtn't they to have knelled?	oughtn't I to have been knelling? oughtn't you to have been knelling? oughtn't he to have been knelling? oughtn't we to have been knelling? oughtn't you to have been knelling? oughtn't they to have been knelling?