English verb conjugation
MUST END

Regular verb: end - ended - ended

Affirmation

Simple form	V-ing form
I must end you must end he must end we must end you must end they must end	I must be ending you must be ending he must be ending we must be ending you must be ending they must be ending
Perfect	V-ing perfect
I must have ended you must have ended he must have ended we must have ended you must have ended they must have ended	I must have been ending you must have been ending he must have been ending we must have been ending you must have been ending they must have been ending

Negation

Simple form	V-ing form
I mustn't end you mustn't end he mustn't end we mustn't end you mustn't end they mustn't end	I mustn't be ending you mustn't be ending he mustn't be ending we mustn't be ending you mustn't be ending they mustn't be ending
Perfect	V-ing perfect
I mustn't have ended you mustn't have ended he mustn't have ended we mustn't have ended you mustn't have ended they mustn't have ended	I mustn't have been ending you mustn't have been ending he mustn't have been ending we mustn't have been ending you mustn't have been ending they mustn't have been ending

Interrogative form

Simple form	V-ing form
must I end? must you end? must he end? must we end? must you end? must they end?	must I be ending? must you be ending? must he be ending? must we be ending? must you be ending? must they be ending?
Perfect	V-ing perfect
must I have ended? must you have ended? must he have ended? must we have ended? must you have ended? must they have ended?	must I have been ending? must you have been ending? must he have been ending? must we have been ending? must you have been ending? must they have been ending?

Interro-negative form

Simple form	V-ing form
mustn't I end? mustn't you end? mustn't he end? mustn't we end? mustn't you end? mustn't they end?	mustn't I be ending? mustn't you be ending? mustn't he be ending? mustn't we be ending? mustn't you be ending? mustn't they be ending?
Perfect	V-ing perfect
mustn't I have ended? mustn't you have ended? mustn't he have ended? mustn't we have ended? mustn't you have ended? mustn't they have ended?	mustn't I have been ending? mustn't you have been ending? mustn't he have been ending? mustn't we have been ending? mustn't you have been ending? mustn't they have been ending?