English verb conjugation
CAN KNELL

Regular verb: knell - knelled - knelled

Affirmation

Simple form	V-ing form
I can knell you can knell she can knell we can knell you can knell they can knell	I can be knelling you can be knelling she can be knelling we can be knelling you can be knelling they can be knelling
Perfect	V-ing perfect
I can have knelled you can have knelled she can have knelled we can have knelled you can have knelled they can have knelled	I can have been knelling you can have been knelling she can have been knelling we can have been knelling you can have been knelling they can have been knelling

Negation

Simple form	V-ing form
I can't knell you can't knell she can't knell we can't knell you can't knell they can't knell	I can't be knelling you can't be knelling she can't be knelling we can't be knelling you can't be knelling they can't be knelling
Perfect	V-ing perfect
I can't have knelled you can't have knelled she can't have knelled we can't have knelled you can't have knelled they can't have knelled	I can't have been knelling you can't have been knelling she can't have been knelling we can't have been knelling you can't have been knelling they can't have been knelling

Interrogative form

Simple form	V-ing form
can I knell? can you knell? can she knell? can we knell? can you knell? can they knell?	can I be knelling? can you be knelling? can she be knelling? can we be knelling? can you be knelling? can they be knelling?
Perfect	V-ing perfect
can I have knelled? can you have knelled? can she have knelled? can we have knelled? can you have knelled? can they have knelled?	can I have been knelling? can you have been knelling? can she have been knelling? can we have been knelling? can you have been knelling? can they have been knelling?

Interro-negative form

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