English verb conjugation
COULD SWIVEL

Regular verb: swivel - swivelled - swivelled

Affirmation

Simple form	V-ing form
I could swivel you could swivel he could swivel we could swivel you could swivel they could swivel	I could be swivelling you could be swivelling he could be swivelling we could be swivelling you could be swivelling they could be swivelling
Perfect	V-ing perfect
I could have swivelled you could have swivelled he could have swivelled we could have swivelled you could have swivelled they could have swivelled	I could have been swivelling you could have been swivelling he could have been swivelling we could have been swivelling you could have been swivelling they could have been swivelling

Negation

Simple form	V-ing form
I could not swivel you could not swivel he could not swivel we could not swivel you could not swivel they could not swivel	I could not be swivelling you could not be swivelling he could not be swivelling we could not be swivelling you could not be swivelling they could not be swivelling
Perfect	V-ing perfect
I could not have swivelled you could not have swivelled he could not have swivelled we could not have swivelled you could not have swivelled they could not have swivelled	I could not have been swivelling you could not have been swivelling he could not have been swivelling we could not have been swivelling you could not have been swivelling they could not have been swivelling

Interrogative form

Simple form	V-ing form
could I swivel? could you swivel? could he swivel? could we swivel? could you swivel? could they swivel?	could I be swivelling? could you be swivelling? could he be swivelling? could we be swivelling? could you be swivelling? could they be swivelling?
Perfect	V-ing perfect
could I have swivelled? could you have swivelled? could he have swivelled? could we have swivelled? could you have swivelled? could they have swivelled?	could I have been swivelling? could you have been swivelling? could he have been swivelling? could we have been swivelling? could you have been swivelling? could they have been swivelling?

Interro-negative form

Simple form	V-ing form
could I not swivel? could you not swivel? could he not swivel? could we not swivel? could you not swivel? could they not swivel?	could I not be swivelling? could you not be swivelling? could he not be swivelling? could we not be swivelling? could you not be swivelling? could they not be swivelling?
Perfect	V-ing perfect
could I not have swivelled? could you not have swivelled? could he not have swivelled? could we not have swivelled? could you not have swivelled? could they not have swivelled?	could I not have been swivelling? could you not have been swivelling? could he not have been swivelling? could we not have been swivelling? could you not have been swivelling? could they not have been swivelling?