English verb conjugation
COULD DRIVEL

Regular verb: drivel - drivelled - drivelled

Affirmation

Simple form	V-ing form
I could drivel you could drivel he could drivel we could drivel you could drivel they could drivel	I could be drivelling you could be drivelling he could be drivelling we could be drivelling you could be drivelling they could be drivelling
Perfect	V-ing perfect
I could have drivelled you could have drivelled he could have drivelled we could have drivelled you could have drivelled they could have drivelled	I could have been drivelling you could have been drivelling he could have been drivelling we could have been drivelling you could have been drivelling they could have been drivelling

Negation

Simple form	V-ing form
I could not drivel you could not drivel he could not drivel we could not drivel you could not drivel they could not drivel	I could not be drivelling you could not be drivelling he could not be drivelling we could not be drivelling you could not be drivelling they could not be drivelling
Perfect	V-ing perfect
I could not have drivelled you could not have drivelled he could not have drivelled we could not have drivelled you could not have drivelled they could not have drivelled	I could not have been drivelling you could not have been drivelling he could not have been drivelling we could not have been drivelling you could not have been drivelling they could not have been drivelling

Interrogative form

Simple form	V-ing form
could I drivel? could you drivel? could he drivel? could we drivel? could you drivel? could they drivel?	could I be drivelling? could you be drivelling? could he be drivelling? could we be drivelling? could you be drivelling? could they be drivelling?
Perfect	V-ing perfect
could I have drivelled? could you have drivelled? could he have drivelled? could we have drivelled? could you have drivelled? could they have drivelled?	could I have been drivelling? could you have been drivelling? could he have been drivelling? could we have been drivelling? could you have been drivelling? could they have been drivelling?

Interro-negative form

Simple form	V-ing form
could I not drivel? could you not drivel? could he not drivel? could we not drivel? could you not drivel? could they not drivel?	could I not be drivelling? could you not be drivelling? could he not be drivelling? could we not be drivelling? could you not be drivelling? could they not be drivelling?
Perfect	V-ing perfect
could I not have drivelled? could you not have drivelled? could he not have drivelled? could we not have drivelled? could you not have drivelled? could they not have drivelled?	could I not have been drivelling? could you not have been drivelling? could he not have been drivelling? could we not have been drivelling? could you not have been drivelling? could they not have been drivelling?