English verb conjugation
MUST LIBEL

Regular verb: libel - libelled - libelled

Affirmation

Simple form	V-ing form
I must libel you must libel he must libel we must libel you must libel they must libel	I must be libelling you must be libelling he must be libelling we must be libelling you must be libelling they must be libelling
Perfect	V-ing perfect
I must have libelled you must have libelled he must have libelled we must have libelled you must have libelled they must have libelled	I must have been libelling you must have been libelling he must have been libelling we must have been libelling you must have been libelling they must have been libelling

Negation

Simple form	V-ing form
I mustn't libel you mustn't libel he mustn't libel we mustn't libel you mustn't libel they mustn't libel	I mustn't be libelling you mustn't be libelling he mustn't be libelling we mustn't be libelling you mustn't be libelling they mustn't be libelling
Perfect	V-ing perfect
I mustn't have libelled you mustn't have libelled he mustn't have libelled we mustn't have libelled you mustn't have libelled they mustn't have libelled	I mustn't have been libelling you mustn't have been libelling he mustn't have been libelling we mustn't have been libelling you mustn't have been libelling they mustn't have been libelling

Interrogative form

Simple form	V-ing form
must I libel? must you libel? must he libel? must we libel? must you libel? must they libel?	must I be libelling? must you be libelling? must he be libelling? must we be libelling? must you be libelling? must they be libelling?
Perfect	V-ing perfect
must I have libelled? must you have libelled? must he have libelled? must we have libelled? must you have libelled? must they have libelled?	must I have been libelling? must you have been libelling? must he have been libelling? must we have been libelling? must you have been libelling? must they have been libelling?

Interro-negative form

Simple form	V-ing form
mustn't I libel? mustn't you libel? mustn't he libel? mustn't we libel? mustn't you libel? mustn't they libel?	mustn't I be libelling? mustn't you be libelling? mustn't he be libelling? mustn't we be libelling? mustn't you be libelling? mustn't they be libelling?
Perfect	V-ing perfect
mustn't I have libelled? mustn't you have libelled? mustn't he have libelled? mustn't we have libelled? mustn't you have libelled? mustn't they have libelled?	mustn't I have been libelling? mustn't you have been libelling? mustn't he have been libelling? mustn't we have been libelling? mustn't you have been libelling? mustn't they have been libelling?