English verb conjugation
MUST RACE

Regular verb: race - raced - raced

Affirmation

Simple form	V-ing form
I must race you must race he must race we must race you must race they must race	I must be racing you must be racing he must be racing we must be racing you must be racing they must be racing
Perfect	V-ing perfect
I must have raced you must have raced he must have raced we must have raced you must have raced they must have raced	I must have been racing you must have been racing he must have been racing we must have been racing you must have been racing they must have been racing

Negation

Simple form	V-ing form
I must not race you must not race he must not race we must not race you must not race they must not race	I must not be racing you must not be racing he must not be racing we must not be racing you must not be racing they must not be racing
Perfect	V-ing perfect
I must not have raced you must not have raced he must not have raced we must not have raced you must not have raced they must not have raced	I must not have been racing you must not have been racing he must not have been racing we must not have been racing you must not have been racing they must not have been racing

Interrogative form

Simple form	V-ing form
must I race? must you race? must he race? must we race? must you race? must they race?	must I be racing? must you be racing? must he be racing? must we be racing? must you be racing? must they be racing?
Perfect	V-ing perfect
must I have raced? must you have raced? must he have raced? must we have raced? must you have raced? must they have raced?	must I have been racing? must you have been racing? must he have been racing? must we have been racing? must you have been racing? must they have been racing?

Interro-negative form

Simple form	V-ing form
must I not race? must you not race? must he not race? must we not race? must you not race? must they not race?	must I not be racing? must you not be racing? must he not be racing? must we not be racing? must you not be racing? must they not be racing?
Perfect	V-ing perfect
must I not have raced? must you not have raced? must he not have raced? must we not have raced? must you not have raced? must they not have raced?	must I not have been racing? must you not have been racing? must he not have been racing? must we not have been racing? must you not have been racing? must they not have been racing?