English verb conjugation
MUST CLUTTER

Regular verb: clutter - cluttered - cluttered

Affirmation

Simple form	V-ing form
I must clutter you must clutter he must clutter we must clutter you must clutter they must clutter	I must be cluttering you must be cluttering he must be cluttering we must be cluttering you must be cluttering they must be cluttering
Perfect	V-ing perfect
I must have cluttered you must have cluttered he must have cluttered we must have cluttered you must have cluttered they must have cluttered	I must have been cluttering you must have been cluttering he must have been cluttering we must have been cluttering you must have been cluttering they must have been cluttering

Negation

Simple form	V-ing form
I mustn't clutter you mustn't clutter he mustn't clutter we mustn't clutter you mustn't clutter they mustn't clutter	I mustn't be cluttering you mustn't be cluttering he mustn't be cluttering we mustn't be cluttering you mustn't be cluttering they mustn't be cluttering
Perfect	V-ing perfect
I mustn't have cluttered you mustn't have cluttered he mustn't have cluttered we mustn't have cluttered you mustn't have cluttered they mustn't have cluttered	I mustn't have been cluttering you mustn't have been cluttering he mustn't have been cluttering we mustn't have been cluttering you mustn't have been cluttering they mustn't have been cluttering

Interrogative form

Simple form	V-ing form
must I clutter? must you clutter? must he clutter? must we clutter? must you clutter? must they clutter?	must I be cluttering? must you be cluttering? must he be cluttering? must we be cluttering? must you be cluttering? must they be cluttering?
Perfect	V-ing perfect
must I have cluttered? must you have cluttered? must he have cluttered? must we have cluttered? must you have cluttered? must they have cluttered?	must I have been cluttering? must you have been cluttering? must he have been cluttering? must we have been cluttering? must you have been cluttering? must they have been cluttering?

Interro-negative form

Simple form	V-ing form
mustn't I clutter? mustn't you clutter? mustn't he clutter? mustn't we clutter? mustn't you clutter? mustn't they clutter?	mustn't I be cluttering? mustn't you be cluttering? mustn't he be cluttering? mustn't we be cluttering? mustn't you be cluttering? mustn't they be cluttering?
Perfect	V-ing perfect
mustn't I have cluttered? mustn't you have cluttered? mustn't he have cluttered? mustn't we have cluttered? mustn't you have cluttered? mustn't they have cluttered?	mustn't I have been cluttering? mustn't you have been cluttering? mustn't he have been cluttering? mustn't we have been cluttering? mustn't you have been cluttering? mustn't they have been cluttering?