English verb conjugation
MUST SWIVEL

Regular verb: swivel - swivelled - swivelled

Affirmation

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

Negation

Simple form	V-ing form
I mustn't swivel you mustn't swivel he mustn't swivel we mustn't swivel you mustn't swivel they mustn't swivel	I mustn't be swivelling you mustn't be swivelling he mustn't be swivelling we mustn't be swivelling you mustn't be swivelling they mustn't be swivelling
Perfect	V-ing perfect
I mustn't have swivelled you mustn't have swivelled he mustn't have swivelled we mustn't have swivelled you mustn't have swivelled they mustn't have swivelled	I mustn't have been swivelling you mustn't have been swivelling he mustn't have been swivelling we mustn't have been swivelling you mustn't have been swivelling they mustn't have been swivelling

Interrogative form

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

Interro-negative form

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