English verb conjugation
MUST PLAY

Regular verb: play - played - played

Affirmation

Simple form	V-ing form
I must play you must play he must play we must play you must play they must play	I must be playing you must be playing he must be playing we must be playing you must be playing they must be playing
Perfect	V-ing perfect
I must have played you must have played he must have played we must have played you must have played they must have played	I must have been playing you must have been playing he must have been playing we must have been playing you must have been playing they must have been playing

Negation

Simple form	V-ing form
I must not play you must not play he must not play we must not play you must not play they must not play	I must not be playing you must not be playing he must not be playing we must not be playing you must not be playing they must not be playing
Perfect	V-ing perfect
I must not have played you must not have played he must not have played we must not have played you must not have played they must not have played	I must not have been playing you must not have been playing he must not have been playing we must not have been playing you must not have been playing they must not have been playing

Interrogative form

Simple form	V-ing form
must I play? must you play? must he play? must we play? must you play? must they play?	must I be playing? must you be playing? must he be playing? must we be playing? must you be playing? must they be playing?
Perfect	V-ing perfect
must I have played? must you have played? must he have played? must we have played? must you have played? must they have played?	must I have been playing? must you have been playing? must he have been playing? must we have been playing? must you have been playing? must they have been playing?

Interro-negative form

Simple form	V-ing form
must I not play? must you not play? must he not play? must we not play? must you not play? must they not play?	must I not be playing? must you not be playing? must he not be playing? must we not be playing? must you not be playing? must they not be playing?
Perfect	V-ing perfect
must I not have played? must you not have played? must he not have played? must we not have played? must you not have played? must they not have played?	must I not have been playing? must you not have been playing? must he not have been playing? must we not have been playing? must you not have been playing? must they not have been playing?