English verb conjugation
MUST BRUSH

Regular verb: brush - brushed - brushed

Affirmation

Simple form	V-ing form
I must brush you must brush he must brush we must brush you must brush they must brush	I must be brushing you must be brushing he must be brushing we must be brushing you must be brushing they must be brushing
Perfect	V-ing perfect
I must have brushed you must have brushed he must have brushed we must have brushed you must have brushed they must have brushed	I must have been brushing you must have been brushing he must have been brushing we must have been brushing you must have been brushing they must have been brushing

Negation

Simple form	V-ing form
I mustn't brush you mustn't brush he mustn't brush we mustn't brush you mustn't brush they mustn't brush	I mustn't be brushing you mustn't be brushing he mustn't be brushing we mustn't be brushing you mustn't be brushing they mustn't be brushing
Perfect	V-ing perfect
I mustn't have brushed you mustn't have brushed he mustn't have brushed we mustn't have brushed you mustn't have brushed they mustn't have brushed	I mustn't have been brushing you mustn't have been brushing he mustn't have been brushing we mustn't have been brushing you mustn't have been brushing they mustn't have been brushing

Interrogative form

Simple form	V-ing form
must I brush? must you brush? must he brush? must we brush? must you brush? must they brush?	must I be brushing? must you be brushing? must he be brushing? must we be brushing? must you be brushing? must they be brushing?
Perfect	V-ing perfect
must I have brushed? must you have brushed? must he have brushed? must we have brushed? must you have brushed? must they have brushed?	must I have been brushing? must you have been brushing? must he have been brushing? must we have been brushing? must you have been brushing? must they have been brushing?

Interro-negative form

Simple form	V-ing form
mustn't I brush? mustn't you brush? mustn't he brush? mustn't we brush? mustn't you brush? mustn't they brush?	mustn't I be brushing? mustn't you be brushing? mustn't he be brushing? mustn't we be brushing? mustn't you be brushing? mustn't they be brushing?
Perfect	V-ing perfect
mustn't I have brushed? mustn't you have brushed? mustn't he have brushed? mustn't we have brushed? mustn't you have brushed? mustn't they have brushed?	mustn't I have been brushing? mustn't you have been brushing? mustn't he have been brushing? mustn't we have been brushing? mustn't you have been brushing? mustn't they have been brushing?