English verb conjugation
COULD JELL

Regular verb: jell - jelled - jelled

Affirmation

Simple form	V-ing form
I could jell you could jell he could jell we could jell you could jell they could jell	I could be jelling you could be jelling he could be jelling we could be jelling you could be jelling they could be jelling
Perfect	V-ing perfect
I could have jelled you could have jelled he could have jelled we could have jelled you could have jelled they could have jelled	I could have been jelling you could have been jelling he could have been jelling we could have been jelling you could have been jelling they could have been jelling

Negation

Simple form	V-ing form
I could not jell you could not jell he could not jell we could not jell you could not jell they could not jell	I could not be jelling you could not be jelling he could not be jelling we could not be jelling you could not be jelling they could not be jelling
Perfect	V-ing perfect
I could not have jelled you could not have jelled he could not have jelled we could not have jelled you could not have jelled they could not have jelled	I could not have been jelling you could not have been jelling he could not have been jelling we could not have been jelling you could not have been jelling they could not have been jelling

Interrogative form

Simple form	V-ing form
could I jell? could you jell? could he jell? could we jell? could you jell? could they jell?	could I be jelling? could you be jelling? could he be jelling? could we be jelling? could you be jelling? could they be jelling?
Perfect	V-ing perfect
could I have jelled? could you have jelled? could he have jelled? could we have jelled? could you have jelled? could they have jelled?	could I have been jelling? could you have been jelling? could he have been jelling? could we have been jelling? could you have been jelling? could they have been jelling?

Interro-negative form

Simple form	V-ing form
could I not jell? could you not jell? could he not jell? could we not jell? could you not jell? could they not jell?	could I not be jelling? could you not be jelling? could he not be jelling? could we not be jelling? could you not be jelling? could they not be jelling?
Perfect	V-ing perfect
could I not have jelled? could you not have jelled? could he not have jelled? could we not have jelled? could you not have jelled? could they not have jelled?	could I not have been jelling? could you not have been jelling? could he not have been jelling? could we not have been jelling? could you not have been jelling? could they not have been jelling?