English verb conjugation
MUST MAT

Regular verb: mat - matted - matted

Affirmation

Simple form	V-ing form
I must mat you must mat he must mat we must mat you must mat they must mat	I must be matting you must be matting he must be matting we must be matting you must be matting they must be matting
Perfect	V-ing perfect
I must have matted you must have matted he must have matted we must have matted you must have matted they must have matted	I must have been matting you must have been matting he must have been matting we must have been matting you must have been matting they must have been matting

Negation

Simple form	V-ing form
I mustn't mat you mustn't mat he mustn't mat we mustn't mat you mustn't mat they mustn't mat	I mustn't be matting you mustn't be matting he mustn't be matting we mustn't be matting you mustn't be matting they mustn't be matting
Perfect	V-ing perfect
I mustn't have matted you mustn't have matted he mustn't have matted we mustn't have matted you mustn't have matted they mustn't have matted	I mustn't have been matting you mustn't have been matting he mustn't have been matting we mustn't have been matting you mustn't have been matting they mustn't have been matting

Interrogative form

Simple form	V-ing form
must I mat? must you mat? must he mat? must we mat? must you mat? must they mat?	must I be matting? must you be matting? must he be matting? must we be matting? must you be matting? must they be matting?
Perfect	V-ing perfect
must I have matted? must you have matted? must he have matted? must we have matted? must you have matted? must they have matted?	must I have been matting? must you have been matting? must he have been matting? must we have been matting? must you have been matting? must they have been matting?

Interro-negative form

Simple form	V-ing form
mustn't I mat? mustn't you mat? mustn't he mat? mustn't we mat? mustn't you mat? mustn't they mat?	mustn't I be matting? mustn't you be matting? mustn't he be matting? mustn't we be matting? mustn't you be matting? mustn't they be matting?
Perfect	V-ing perfect
mustn't I have matted? mustn't you have matted? mustn't he have matted? mustn't we have matted? mustn't you have matted? mustn't they have matted?	mustn't I have been matting? mustn't you have been matting? mustn't he have been matting? mustn't we have been matting? mustn't you have been matting? mustn't they have been matting?