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 must not brush you must not brush he must not brush we must not brush you must not brush they must not brush	I must not be brushing you must not be brushing he must not be brushing we must not be brushing you must not be brushing they must not be brushing
Perfect	V-ing perfect
I must not have brushed you must not have brushed he must not have brushed we must not have brushed you must not have brushed they must not have brushed	I must not have been brushing you must not have been brushing he must not have been brushing we must not have been brushing you must not have been brushing they must not 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
must I not brush? must you not brush? must he not brush? must we not brush? must you not brush? must they not brush?	must I not be brushing? must you not be brushing? must he not be brushing? must we not be brushing? must you not be brushing? must they not be brushing?
Perfect	V-ing perfect
must I not have brushed? must you not have brushed? must he not have brushed? must we not have brushed? must you not have brushed? must they not have brushed?	must I not have been brushing? must you not have been brushing? must he not have been brushing? must we not have been brushing? must you not have been brushing? must they not have been brushing?