English verb conjugation
MUST DRIVEL

Regular verb: drivel - drivelled - drivelled

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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