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 couldn't swivel you couldn't swivel he couldn't swivel we couldn't swivel you couldn't swivel they couldn't swivel	I couldn't be swivelling you couldn't be swivelling he couldn't be swivelling we couldn't be swivelling you couldn't be swivelling they couldn't be swivelling
Perfect	V-ing perfect
I couldn't have swivelled you couldn't have swivelled he couldn't have swivelled we couldn't have swivelled you couldn't have swivelled they couldn't have swivelled	I couldn't have been swivelling you couldn't have been swivelling he couldn't have been swivelling we couldn't have been swivelling you couldn't have been swivelling they couldn't 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
couldn't I swivel? couldn't you swivel? couldn't he swivel? couldn't we swivel? couldn't you swivel? couldn't they swivel?	couldn't I be swivelling? couldn't you be swivelling? couldn't he be swivelling? couldn't we be swivelling? couldn't you be swivelling? couldn't they be swivelling?
Perfect	V-ing perfect
couldn't I have swivelled? couldn't you have swivelled? couldn't he have swivelled? couldn't we have swivelled? couldn't you have swivelled? couldn't they have swivelled?	couldn't I have been swivelling? couldn't you have been swivelling? couldn't he have been swivelling? couldn't we have been swivelling? couldn't you have been swivelling? couldn't they have been swivelling?